diff --git a/Makefile.in b/Makefile.in
index 0d708d7..0cc2b4f 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,7 +1,7 @@
-# Makefile.in generated by automake 1.15.1 from Makefile.am.
+# Makefile.in generated by automake 1.16.3 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994-2017 Free Software Foundation, Inc.
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
 
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -169,9 +169,9 @@
   $(RECURSIVE_CLEAN_TARGETS) \
   $(am__extra_recursive_targets)
 AM_RECURSIVE_TARGETS = $(am__recursive_targets:-recursive=) TAGS CTAGS \
-	cscope distdir dist dist-all distcheck
-am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) \
-	$(LISP)config.h.in
+	cscope distdir distdir-am dist dist-all distcheck
+am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP) \
+	config.h.in
 # Read a list of newline-separated strings from the standard input,
 # and print each of them once, without duplicates.  Input order is
 # *not* preserved.
@@ -235,6 +235,8 @@
 DIST_ARCHIVES = $(distdir).tar.gz
 GZIP_ENV = --best
 DIST_TARGETS = dist-gzip
+# Exists only to be overridden by the user if desired.
+AM_DISTCHECK_DVI_TARGET = dvi
 distuninstallcheck_listfiles = find . -type f -print
 am__distuninstallcheck_listfiles = $(distuninstallcheck_listfiles) \
   | sed 's|^\./|$(prefix)/|' | grep -v '$(infodir)/dir$$'
@@ -403,8 +405,8 @@
 	    echo ' $(SHELL) ./config.status'; \
 	    $(SHELL) ./config.status;; \
 	  *) \
-	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__depfiles_maybe)'; \
-	    cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__depfiles_maybe);; \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__maybe_remake_depfiles);; \
 	esac;
 
 $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
@@ -571,7 +573,10 @@
 	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
 	-rm -f cscope.out cscope.in.out cscope.po.out cscope.files
 
-distdir: $(DISTFILES)
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
 	$(am__remove_distdir)
 	test -d "$(distdir)" || mkdir "$(distdir)"
 	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
@@ -651,6 +656,10 @@
 	tardir=$(distdir) && $(am__tar) | XZ_OPT=$${XZ_OPT--e} xz -c >$(distdir).tar.xz
 	$(am__post_remove_distdir)
 
+dist-zstd: distdir
+	tardir=$(distdir) && $(am__tar) | zstd -c $${ZSTD_CLEVEL-$${ZSTD_OPT--19}} >$(distdir).tar.zst
+	$(am__post_remove_distdir)
+
 dist-tarZ: distdir
 	@echo WARNING: "Support for distribution archives compressed with" \
 		       "legacy program 'compress' is deprecated." >&2
@@ -693,6 +702,8 @@
 	  eval GZIP= gzip $(GZIP_ENV) -dc $(distdir).shar.gz | unshar ;;\
 	*.zip*) \
 	  unzip $(distdir).zip ;;\
+	*.tar.zst*) \
+	  zstd -dc $(distdir).tar.zst | $(am__untar) ;;\
 	esac
 	chmod -R a-w $(distdir)
 	chmod u+w $(distdir)
@@ -708,7 +719,7 @@
 	    $(DISTCHECK_CONFIGURE_FLAGS) \
 	    --srcdir=../.. --prefix="$$dc_install_base" \
 	  && $(MAKE) $(AM_MAKEFLAGS) \
-	  && $(MAKE) $(AM_MAKEFLAGS) dvi \
+	  && $(MAKE) $(AM_MAKEFLAGS) $(AM_DISTCHECK_DVI_TARGET) \
 	  && $(MAKE) $(AM_MAKEFLAGS) check \
 	  && $(MAKE) $(AM_MAKEFLAGS) install \
 	  && $(MAKE) $(AM_MAKEFLAGS) installcheck \
@@ -873,18 +884,19 @@
 	am--refresh check check-am clean clean-cscope clean-generic \
 	clean-libtool cscope cscopelist-am ctags ctags-am dist \
 	dist-all dist-bzip2 dist-gzip dist-lzip dist-shar dist-tarZ \
-	dist-xz dist-zip distcheck distclean distclean-generic \
-	distclean-hdr distclean-libtool distclean-tags distcleancheck \
-	distdir distuninstallcheck dvi dvi-am html html-am info \
-	info-am install install-am install-data install-data-am \
-	install-dvi install-dvi-am install-exec install-exec-am \
-	install-html install-html-am install-info install-info-am \
-	install-man install-pdf install-pdf-am install-pkgconfigDATA \
-	install-ps install-ps-am install-strip installcheck \
-	installcheck-am installdirs installdirs-am maintainer-clean \
-	maintainer-clean-generic mostlyclean mostlyclean-generic \
-	mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \
-	uninstall-am uninstall-pkgconfigDATA
+	dist-xz dist-zip dist-zstd distcheck distclean \
+	distclean-generic distclean-hdr distclean-libtool \
+	distclean-tags distcleancheck distdir distuninstallcheck dvi \
+	dvi-am html html-am info info-am install install-am \
+	install-data install-data-am install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-pkgconfigDATA install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	installdirs-am maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-generic mostlyclean-libtool pdf pdf-am \
+	ps ps-am tags tags-am uninstall uninstall-am \
+	uninstall-pkgconfigDATA
 
 .PRECIOUS: Makefile
 
diff --git a/aclocal.m4 b/aclocal.m4
index def39e7..e3437b4 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,6 +1,6 @@
-# generated automatically by aclocal 1.15.1 -*- Autoconf -*-
-
-# Copyright (C) 1996-2017 Free Software Foundation, Inc.
+# generated automatically by aclocal 1.16.3 -*- Autoconf -*-
+
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -20,7 +20,7 @@
 If you have problems, you may need to regenerate the build system entirely.
 To do so, use the procedure documented by the package, typically 'autoreconf'.])])
 
-# Copyright (C) 2002-2017 Free Software Foundation, Inc.
+# Copyright (C) 2002-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -32,10 +32,10 @@
 # generated from the m4 files accompanying Automake X.Y.
 # (This private macro should not be called outside this file.)
 AC_DEFUN([AM_AUTOMAKE_VERSION],
-[am__api_version='1.15'
+[am__api_version='1.16'
 dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
 dnl require some minimum version.  Point them to the right macro.
-m4_if([$1], [1.15.1], [],
+m4_if([$1], [1.16.3], [],
       [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
 ])
 
@@ -51,14 +51,14 @@
 # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
 # This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
-[AM_AUTOMAKE_VERSION([1.15.1])dnl
+[AM_AUTOMAKE_VERSION([1.16.3])dnl
 m4_ifndef([AC_AUTOCONF_VERSION],
   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
 
 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
 
-# Copyright (C) 2001-2017 Free Software Foundation, Inc.
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -110,7 +110,7 @@
 
 # AM_CONDITIONAL                                            -*- Autoconf -*-
 
-# Copyright (C) 1997-2017 Free Software Foundation, Inc.
+# Copyright (C) 1997-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -141,7 +141,7 @@
 Usually this means the macro was only invoked conditionally.]])
 fi])])
 
-# Copyright (C) 1999-2017 Free Software Foundation, Inc.
+# Copyright (C) 1999-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -332,12 +332,11 @@
 
 # Generate code to set up dependency tracking.              -*- Autoconf -*-
 
-# Copyright (C) 1999-2017 Free Software Foundation, Inc.
-#
-# This file is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
+# Copyright (C) 1999-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
 
 # _AM_OUTPUT_DEPENDENCY_COMMANDS
 # ------------------------------
@@ -346,49 +345,43 @@
   # Older Autoconf quotes --file arguments for eval, but not when files
   # are listed without --file.  Let's play safe and only enable the eval
   # if we detect the quoting.
-  case $CONFIG_FILES in
-  *\'*) eval set x "$CONFIG_FILES" ;;
-  *)   set x $CONFIG_FILES ;;
-  esac
+  # TODO: see whether this extra hack can be removed once we start
+  # requiring Autoconf 2.70 or later.
+  AS_CASE([$CONFIG_FILES],
+          [*\'*], [eval set x "$CONFIG_FILES"],
+          [*], [set x $CONFIG_FILES])
   shift
-  for mf
+  # Used to flag and report bootstrapping failures.
+  am_rc=0
+  for am_mf
   do
     # Strip MF so we end up with the name of the file.
-    mf=`echo "$mf" | sed -e 's/:.*$//'`
-    # Check whether this is an Automake generated Makefile or not.
-    # We used to match only the files named 'Makefile.in', but
-    # some people rename them; so instead we look at the file content.
-    # Grep'ing the first line is not enough: some people post-process
-    # each Makefile.in and add a new line on top of each file to say so.
-    # Grep'ing the whole file is not good either: AIX grep has a line
+    am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
+    # Check whether this is an Automake generated Makefile which includes
+    # dependency-tracking related rules and includes.
+    # Grep'ing the whole file directly is not great: AIX grep has a line
     # limit of 2048, but all sed's we know have understand at least 4000.
-    if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
-      dirpart=`AS_DIRNAME("$mf")`
-    else
-      continue
-    fi
-    # Extract the definition of DEPDIR, am__include, and am__quote
-    # from the Makefile without running 'make'.
-    DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
-    test -z "$DEPDIR" && continue
-    am__include=`sed -n 's/^am__include = //p' < "$mf"`
-    test -z "$am__include" && continue
-    am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
-    # Find all dependency output files, they are included files with
-    # $(DEPDIR) in their names.  We invoke sed twice because it is the
-    # simplest approach to changing $(DEPDIR) to its actual value in the
-    # expansion.
-    for file in `sed -n "
-      s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
-	 sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g'`; do
-      # Make sure the directory exists.
-      test -f "$dirpart/$file" && continue
-      fdir=`AS_DIRNAME(["$file"])`
-      AS_MKDIR_P([$dirpart/$fdir])
-      # echo "creating $dirpart/$file"
-      echo '# dummy' > "$dirpart/$file"
-    done
+    sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
+      || continue
+    am_dirpart=`AS_DIRNAME(["$am_mf"])`
+    am_filepart=`AS_BASENAME(["$am_mf"])`
+    AM_RUN_LOG([cd "$am_dirpart" \
+      && sed -e '/# am--include-marker/d' "$am_filepart" \
+        | $MAKE -f - am--depfiles]) || am_rc=$?
   done
+  if test $am_rc -ne 0; then
+    AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
+    for automatic dependency tracking.  If GNU make was not used, consider
+    re-running the configure script with MAKE="gmake" (or whatever is
+    necessary).  You can also try re-running configure with the
+    '--disable-dependency-tracking' option to at least be able to build
+    the package (albeit without support for automatic dependency tracking).])
+  fi
+  AS_UNSET([am_dirpart])
+  AS_UNSET([am_filepart])
+  AS_UNSET([am_mf])
+  AS_UNSET([am_rc])
+  rm -f conftest-deps.mk
 }
 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
 
@@ -397,18 +390,17 @@
 # -----------------------------
 # This macro should only be invoked once -- use via AC_REQUIRE.
 #
-# This code is only required when automatic dependency tracking
-# is enabled.  FIXME.  This creates each '.P' file that we will
-# need in order to bootstrap the dependency handling code.
+# This code is only required when automatic dependency tracking is enabled.
+# This creates each '.Po' and '.Plo' makefile fragment that we'll need in
+# order to bootstrap the dependency handling code.
 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
 [AC_CONFIG_COMMANDS([depfiles],
      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
-     [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
-])
+     [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
 
 # Do all the work for Automake.                             -*- Autoconf -*-
 
-# Copyright (C) 1996-2017 Free Software Foundation, Inc.
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -495,8 +487,8 @@
 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
 # For better backward compatibility.  To be removed once Automake 1.9.x
 # dies out for good.  For more background, see:
-# <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
-# <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
 # We need awk for the "check" target (and possibly the TAP driver).  The
 # system "awk" is bad on some platforms.
@@ -563,7 +555,7 @@
 Aborting the configuration process, to ensure you take notice of the issue.
 
 You can download and install GNU coreutils to get an 'rm' implementation
-that behaves properly: <http://www.gnu.org/software/coreutils/>.
+that behaves properly: <https://www.gnu.org/software/coreutils/>.
 
 If you want to complete the configuration process using your problematic
 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
@@ -605,7 +597,7 @@
 done
 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
 
-# Copyright (C) 2001-2017 Free Software Foundation, Inc.
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -626,7 +618,7 @@
 fi
 AC_SUBST([install_sh])])
 
-# Copyright (C) 2003-2017 Free Software Foundation, Inc.
+# Copyright (C) 2003-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -648,7 +640,7 @@
 # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
 # From Jim Meyering
 
-# Copyright (C) 1996-2017 Free Software Foundation, Inc.
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -683,7 +675,7 @@
 
 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
 
-# Copyright (C) 2001-2017 Free Software Foundation, Inc.
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -691,49 +683,42 @@
 
 # AM_MAKE_INCLUDE()
 # -----------------
-# Check to see how make treats includes.
+# Check whether make has an 'include' directive that can support all
+# the idioms we need for our automatic dependency tracking code.
 AC_DEFUN([AM_MAKE_INCLUDE],
-[am_make=${MAKE-make}
-cat > confinc << 'END'
+[AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
+cat > confinc.mk << 'END'
 am__doit:
-	@echo this is the am__doit target
+	@echo this is the am__doit target >confinc.out
 .PHONY: am__doit
 END
-# If we don't find an include directive, just comment out the code.
-AC_MSG_CHECKING([for style of include used by $am_make])
 am__include="#"
 am__quote=
-_am_result=none
-# First try GNU make style include.
-echo "include confinc" > confmf
-# Ignore all kinds of additional output from 'make'.
-case `$am_make -s -f confmf 2> /dev/null` in #(
-*the\ am__doit\ target*)
-  am__include=include
-  am__quote=
-  _am_result=GNU
-  ;;
-esac
-# Now try BSD make style include.
-if test "$am__include" = "#"; then
-   echo '.include "confinc"' > confmf
-   case `$am_make -s -f confmf 2> /dev/null` in #(
-   *the\ am__doit\ target*)
-     am__include=.include
-     am__quote="\""
-     _am_result=BSD
-     ;;
-   esac
-fi
-AC_SUBST([am__include])
-AC_SUBST([am__quote])
-AC_MSG_RESULT([$_am_result])
-rm -f confinc confmf
-])
+# BSD make does it like this.
+echo '.include "confinc.mk" # ignored' > confmf.BSD
+# Other make implementations (GNU, Solaris 10, AIX) do it like this.
+echo 'include confinc.mk # ignored' > confmf.GNU
+_am_result=no
+for s in GNU BSD; do
+  AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
+  AS_CASE([$?:`cat confinc.out 2>/dev/null`],
+      ['0:this is the am__doit target'],
+      [AS_CASE([$s],
+          [BSD], [am__include='.include' am__quote='"'],
+          [am__include='include' am__quote=''])])
+  if test "$am__include" != "#"; then
+    _am_result="yes ($s style)"
+    break
+  fi
+done
+rm -f confinc.* confmf.*
+AC_MSG_RESULT([${_am_result}])
+AC_SUBST([am__include])])
+AC_SUBST([am__quote])])
 
 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
 
-# Copyright (C) 1997-2017 Free Software Foundation, Inc.
+# Copyright (C) 1997-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -754,12 +739,7 @@
 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 AC_REQUIRE_AUX_FILE([missing])dnl
 if test x"${MISSING+set}" != xset; then
-  case $am_aux_dir in
-  *\ * | *\	*)
-    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
-  *)
-    MISSING="\${SHELL} $am_aux_dir/missing" ;;
-  esac
+  MISSING="\${SHELL} '$am_aux_dir/missing'"
 fi
 # Use eval to expand $SHELL
 if eval "$MISSING --is-lightweight"; then
@@ -774,7 +754,7 @@
 # Obsolete and "removed" macros, that must however still report explicit
 # error messages when used, to smooth transition.
 #
-# Copyright (C) 1996-2017 Free Software Foundation, Inc.
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -801,7 +781,7 @@
 
 # Helper functions for option handling.                     -*- Autoconf -*-
 
-# Copyright (C) 2001-2017 Free Software Foundation, Inc.
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -830,7 +810,7 @@
 AC_DEFUN([_AM_IF_OPTION],
 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
 
-# Copyright (C) 1999-2017 Free Software Foundation, Inc.
+# Copyright (C) 1999-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -877,7 +857,7 @@
 # For backward compatibility.
 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
 
-# Copyright (C) 2001-2017 Free Software Foundation, Inc.
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -896,7 +876,7 @@
 
 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
 
-# Copyright (C) 1996-2017 Free Software Foundation, Inc.
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -977,7 +957,7 @@
 rm -f conftest.file
 ])
 
-# Copyright (C) 2009-2017 Free Software Foundation, Inc.
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -1037,7 +1017,7 @@
 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
 ])
 
-# Copyright (C) 2001-2017 Free Software Foundation, Inc.
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -1065,7 +1045,7 @@
 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
 AC_SUBST([INSTALL_STRIP_PROGRAM])])
 
-# Copyright (C) 2006-2017 Free Software Foundation, Inc.
+# Copyright (C) 2006-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -1084,7 +1064,7 @@
 
 # Check how to create a tarball.                            -*- Autoconf -*-
 
-# Copyright (C) 2004-2017 Free Software Foundation, Inc.
+# Copyright (C) 2004-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/bin/Makefile.in b/bin/Makefile.in
index cbdc558..ca77f9b 100644
--- a/bin/Makefile.in
+++ b/bin/Makefile.in
@@ -1,7 +1,7 @@
-# Makefile.in generated by automake 1.15.1 from Makefile.am.
+# Makefile.in generated by automake 1.16.3 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994-2017 Free Software Foundation, Inc.
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
 
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -112,6 +112,8 @@
 CONFIG_HEADER = $(top_builddir)/config.h
 CONFIG_CLEAN_FILES =
 CONFIG_CLEAN_VPATH_FILES =
+am__installdirs = "$(DESTDIR)$(bindir)"
+PROGRAMS = $(bin_PROGRAMS)
 LIBRARIES = $(noinst_LIBRARIES)
 ARFLAGS = cru
 AM_V_AR = $(am__v_AR_@AM_V@)
@@ -131,8 +133,6 @@
 @SYSTEM_EXPAT_FALSE@	@top_builddir@/SFconv/expat/xmltok/libexpat_a-xmlrole.$(OBJEXT) \
 @SYSTEM_EXPAT_FALSE@	@top_builddir@/SFconv/expat/xmltok/libexpat_a-xmltok.$(OBJEXT)
 libexpat_a_OBJECTS = $(am_libexpat_a_OBJECTS)
-am__installdirs = "$(DESTDIR)$(bindir)"
-PROGRAMS = $(bin_PROGRAMS)
 am_sfconv_OBJECTS = @top_builddir@/SFconv/sfconv-SFconv.$(OBJEXT) \
 	@top_builddir@/SFconv/sfconv-UtfCodec.$(OBJEXT)
 sfconv_OBJECTS = $(am_sfconv_OBJECTS)
@@ -170,7 +170,16 @@
 am__v_at_1 = 
 DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
 depcomp = $(SHELL) $(top_srcdir)/depcomp
-am__depfiles_maybe = depfiles
+am__maybe_remake_depfiles = depfiles
+am__depfiles_remade =  \
+	@top_builddir@/SFconv/$(DEPDIR)/sfconv-SFconv.Po \
+	@top_builddir@/SFconv/$(DEPDIR)/sfconv-UtfCodec.Po \
+	@top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/libexpat_a-hashtable.Po \
+	@top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/libexpat_a-xmlparse.Po \
+	@top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/libexpat_a-xmlrole.Po \
+	@top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/libexpat_a-xmltok.Po \
+	@top_builddir@/source/Sample-tools/$(DEPDIR)/TECkit_Compile.Po \
+	@top_builddir@/source/Sample-tools/$(DEPDIR)/TxtConv.Po
 am__mv = mv -f
 COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
 	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
@@ -435,8 +444,8 @@
 	  *config.status*) \
 	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
 	  *) \
-	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
-	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
 	esac;
 
 $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
@@ -447,38 +456,6 @@
 $(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
 	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
 $(am__aclocal_m4_deps):
-
-clean-noinstLIBRARIES:
-	-test -z "$(noinst_LIBRARIES)" || rm -f $(noinst_LIBRARIES)
-@top_builddir@/SFconv/expat/xmlparse/$(am__dirstamp):
-	@$(MKDIR_P) @top_builddir@/SFconv/expat/xmlparse
-	@: > @top_builddir@/SFconv/expat/xmlparse/$(am__dirstamp)
-@top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/$(am__dirstamp):
-	@$(MKDIR_P) @top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)
-	@: > @top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/$(am__dirstamp)
-@top_builddir@/SFconv/expat/xmlparse/libexpat_a-xmlparse.$(OBJEXT):  \
-	@top_builddir@/SFconv/expat/xmlparse/$(am__dirstamp) \
-	@top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/$(am__dirstamp)
-@top_builddir@/SFconv/expat/xmlparse/libexpat_a-hashtable.$(OBJEXT):  \
-	@top_builddir@/SFconv/expat/xmlparse/$(am__dirstamp) \
-	@top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/$(am__dirstamp)
-@top_builddir@/SFconv/expat/xmltok/$(am__dirstamp):
-	@$(MKDIR_P) @top_builddir@/SFconv/expat/xmltok
-	@: > @top_builddir@/SFconv/expat/xmltok/$(am__dirstamp)
-@top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/$(am__dirstamp):
-	@$(MKDIR_P) @top_builddir@/SFconv/expat/xmltok/$(DEPDIR)
-	@: > @top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/$(am__dirstamp)
-@top_builddir@/SFconv/expat/xmltok/libexpat_a-xmlrole.$(OBJEXT):  \
-	@top_builddir@/SFconv/expat/xmltok/$(am__dirstamp) \
-	@top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/$(am__dirstamp)
-@top_builddir@/SFconv/expat/xmltok/libexpat_a-xmltok.$(OBJEXT):  \
-	@top_builddir@/SFconv/expat/xmltok/$(am__dirstamp) \
-	@top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/$(am__dirstamp)
-
-libexpat.a: $(libexpat_a_OBJECTS) $(libexpat_a_DEPENDENCIES) $(EXTRA_libexpat_a_DEPENDENCIES) 
-	$(AM_V_at)-rm -f libexpat.a
-	$(AM_V_AR)$(libexpat_a_AR) libexpat.a $(libexpat_a_OBJECTS) $(libexpat_a_LIBADD)
-	$(AM_V_at)$(RANLIB) libexpat.a
 install-binPROGRAMS: $(bin_PROGRAMS)
 	@$(NORMAL_INSTALL)
 	@list='$(bin_PROGRAMS)'; test -n "$(bindir)" || list=; \
@@ -528,6 +505,38 @@
 	list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \
 	echo " rm -f" $$list; \
 	rm -f $$list
+
+clean-noinstLIBRARIES:
+	-test -z "$(noinst_LIBRARIES)" || rm -f $(noinst_LIBRARIES)
+@top_builddir@/SFconv/expat/xmlparse/$(am__dirstamp):
+	@$(MKDIR_P) @top_builddir@/SFconv/expat/xmlparse
+	@: > @top_builddir@/SFconv/expat/xmlparse/$(am__dirstamp)
+@top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) @top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)
+	@: > @top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/$(am__dirstamp)
+@top_builddir@/SFconv/expat/xmlparse/libexpat_a-xmlparse.$(OBJEXT):  \
+	@top_builddir@/SFconv/expat/xmlparse/$(am__dirstamp) \
+	@top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/$(am__dirstamp)
+@top_builddir@/SFconv/expat/xmlparse/libexpat_a-hashtable.$(OBJEXT):  \
+	@top_builddir@/SFconv/expat/xmlparse/$(am__dirstamp) \
+	@top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/$(am__dirstamp)
+@top_builddir@/SFconv/expat/xmltok/$(am__dirstamp):
+	@$(MKDIR_P) @top_builddir@/SFconv/expat/xmltok
+	@: > @top_builddir@/SFconv/expat/xmltok/$(am__dirstamp)
+@top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) @top_builddir@/SFconv/expat/xmltok/$(DEPDIR)
+	@: > @top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/$(am__dirstamp)
+@top_builddir@/SFconv/expat/xmltok/libexpat_a-xmlrole.$(OBJEXT):  \
+	@top_builddir@/SFconv/expat/xmltok/$(am__dirstamp) \
+	@top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/$(am__dirstamp)
+@top_builddir@/SFconv/expat/xmltok/libexpat_a-xmltok.$(OBJEXT):  \
+	@top_builddir@/SFconv/expat/xmltok/$(am__dirstamp) \
+	@top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/$(am__dirstamp)
+
+libexpat.a: $(libexpat_a_OBJECTS) $(libexpat_a_DEPENDENCIES) $(EXTRA_libexpat_a_DEPENDENCIES) 
+	$(AM_V_at)-rm -f libexpat.a
+	$(AM_V_AR)$(libexpat_a_AR) libexpat.a $(libexpat_a_OBJECTS) $(libexpat_a_LIBADD)
+	$(AM_V_at)$(RANLIB) libexpat.a
 @top_builddir@/SFconv/$(am__dirstamp):
 	@$(MKDIR_P) @top_builddir@/SFconv
 	@: > @top_builddir@/SFconv/$(am__dirstamp)
@@ -575,14 +584,20 @@
 distclean-compile:
 	-rm -f *.tab.c
 
-@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/SFconv/$(DEPDIR)/sfconv-SFconv.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/SFconv/$(DEPDIR)/sfconv-UtfCodec.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/libexpat_a-hashtable.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/libexpat_a-xmlparse.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/libexpat_a-xmlrole.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/libexpat_a-xmltok.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/source/Sample-tools/$(DEPDIR)/TECkit_Compile.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/source/Sample-tools/$(DEPDIR)/TxtConv.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/SFconv/$(DEPDIR)/sfconv-SFconv.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/SFconv/$(DEPDIR)/sfconv-UtfCodec.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/libexpat_a-hashtable.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/libexpat_a-xmlparse.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/libexpat_a-xmlrole.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/libexpat_a-xmltok.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/source/Sample-tools/$(DEPDIR)/TECkit_Compile.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@@top_builddir@/source/Sample-tools/$(DEPDIR)/TxtConv.Po@am__quote@ # am--include-marker
+
+$(am__depfiles_remade):
+	@$(MKDIR_P) $(@D)
+	@echo '# dummy' >$@-t && $(am__mv) $@-t $@
+
+am--depfiles: $(am__depfiles_remade)
 
 .c.o:
 @am__fastdepCC_TRUE@	$(AM_V_CC)depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.o$$||'`;\
@@ -774,7 +789,10 @@
 distclean-tags:
 	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
 
-distdir: $(DISTFILES)
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
 	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
 	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
 	list='$(DISTFILES)'; \
@@ -806,7 +824,7 @@
 	done
 check-am: all-am
 check: check-am
-all-am: Makefile $(LIBRARIES) $(PROGRAMS)
+all-am: Makefile $(PROGRAMS) $(LIBRARIES)
 installdirs:
 	for dir in "$(DESTDIR)$(bindir)"; do \
 	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
@@ -855,7 +873,14 @@
 	clean-noinstLIBRARIES mostlyclean-am
 
 distclean: distclean-am
-	-rm -rf @top_builddir@/SFconv/$(DEPDIR) @top_builddir@/SFconv/expat/xmlparse/$(DEPDIR) @top_builddir@/SFconv/expat/xmltok/$(DEPDIR) @top_builddir@/source/Sample-tools/$(DEPDIR)
+		-rm -f @top_builddir@/SFconv/$(DEPDIR)/sfconv-SFconv.Po
+	-rm -f @top_builddir@/SFconv/$(DEPDIR)/sfconv-UtfCodec.Po
+	-rm -f @top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/libexpat_a-hashtable.Po
+	-rm -f @top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/libexpat_a-xmlparse.Po
+	-rm -f @top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/libexpat_a-xmlrole.Po
+	-rm -f @top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/libexpat_a-xmltok.Po
+	-rm -f @top_builddir@/source/Sample-tools/$(DEPDIR)/TECkit_Compile.Po
+	-rm -f @top_builddir@/source/Sample-tools/$(DEPDIR)/TxtConv.Po
 	-rm -f Makefile
 distclean-am: clean-am distclean-compile distclean-generic \
 	distclean-tags
@@ -901,7 +926,14 @@
 installcheck-am:
 
 maintainer-clean: maintainer-clean-am
-	-rm -rf @top_builddir@/SFconv/$(DEPDIR) @top_builddir@/SFconv/expat/xmlparse/$(DEPDIR) @top_builddir@/SFconv/expat/xmltok/$(DEPDIR) @top_builddir@/source/Sample-tools/$(DEPDIR)
+		-rm -f @top_builddir@/SFconv/$(DEPDIR)/sfconv-SFconv.Po
+	-rm -f @top_builddir@/SFconv/$(DEPDIR)/sfconv-UtfCodec.Po
+	-rm -f @top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/libexpat_a-hashtable.Po
+	-rm -f @top_builddir@/SFconv/expat/xmlparse/$(DEPDIR)/libexpat_a-xmlparse.Po
+	-rm -f @top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/libexpat_a-xmlrole.Po
+	-rm -f @top_builddir@/SFconv/expat/xmltok/$(DEPDIR)/libexpat_a-xmltok.Po
+	-rm -f @top_builddir@/source/Sample-tools/$(DEPDIR)/TECkit_Compile.Po
+	-rm -f @top_builddir@/source/Sample-tools/$(DEPDIR)/TxtConv.Po
 	-rm -f Makefile
 maintainer-clean-am: distclean-am maintainer-clean-generic
 
@@ -922,7 +954,7 @@
 
 .MAKE: install-am install-strip
 
-.PHONY: CTAGS GTAGS TAGS all all-am check check-am clean \
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
 	clean-binPROGRAMS clean-generic clean-libtool \
 	clean-noinstLIBRARIES cscopelist-am ctags ctags-am distclean \
 	distclean-compile distclean-generic distclean-libtool \
diff --git a/compile b/compile
index a85b723..23fcba0 100755
--- a/compile
+++ b/compile
@@ -1,9 +1,9 @@
 #! /bin/sh
 # Wrapper for compilers which do not understand '-c -o'.
 
-scriptversion=2012-10-14.11; # UTC
-
-# Copyright (C) 1999-2014 Free Software Foundation, Inc.
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1999-2020 Free Software Foundation, Inc.
 # Written by Tom Tromey <tromey@cygnus.com>.
 #
 # This program is free software; you can redistribute it and/or modify
@@ -17,7 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -53,7 +53,7 @@
 	  MINGW*)
 	    file_conv=mingw
 	    ;;
-	  CYGWIN*)
+	  CYGWIN* | MSYS*)
 	    file_conv=cygwin
 	    ;;
 	  *)
@@ -67,7 +67,7 @@
 	mingw/*)
 	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
 	  ;;
-	cygwin/*)
+	cygwin/* | msys/*)
 	  file=`cygpath -m "$file" || echo "$file"`
 	  ;;
 	wine/*)
@@ -255,7 +255,8 @@
     echo "compile $scriptversion"
     exit $?
     ;;
-  cl | *[/\\]cl | cl.exe | *[/\\]cl.exe )
+  cl | *[/\\]cl | cl.exe | *[/\\]cl.exe | \
+  icl | *[/\\]icl | icl.exe | *[/\\]icl.exe )
     func_cl_wrapper "$@"      # Doesn't return...
     ;;
 esac
@@ -339,9 +340,9 @@
 # Local Variables:
 # mode: shell-script
 # sh-indentation: 2
-# eval: (add-hook 'write-file-hooks 'time-stamp)
+# eval: (add-hook 'before-save-hook 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
+# time-stamp-time-zone: "UTC0"
 # time-stamp-end: "; # UTC"
 # End:
diff --git a/configure b/configure
index 953aac5..6e33576 100755
--- a/configure
+++ b/configure
@@ -686,7 +686,6 @@
 AMDEPBACKSLASH
 AMDEP_FALSE
 AMDEP_TRUE
-am__quote
 am__include
 DEPDIR
 OBJEXT
@@ -776,7 +775,8 @@
 PACKAGE_TARNAME
 PACKAGE_NAME
 PATH_SEPARATOR
-SHELL'
+SHELL
+am__quote'
 ac_subst_files=''
 ac_user_opts='
 enable_option_checking
@@ -2544,7 +2544,7 @@
     NONENONEs,x,x, &&
   program_prefix=${target_alias}-
 
-am__api_version='1.15'
+am__api_version='1.16'
 
 # Find a good install program.  We prefer a C program (faster),
 # so one script is as good as another.  But avoid the broken or
@@ -2720,12 +2720,7 @@
 am_aux_dir=`cd "$ac_aux_dir" && pwd`
 
 if test x"${MISSING+set}" != xset; then
-  case $am_aux_dir in
-  *\ * | *\	*)
-    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
-  *)
-    MISSING="\${SHELL} $am_aux_dir/missing" ;;
-  esac
+  MISSING="\${SHELL} '$am_aux_dir/missing'"
 fi
 # Use eval to expand $SHELL
 if eval "$MISSING --is-lightweight"; then
@@ -3060,8 +3055,8 @@
 
 # For better backward compatibility.  To be removed once Automake 1.9.x
 # dies out for good.  For more background, see:
-# <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
-# <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
 mkdir_p='$(MKDIR_P)'
 
 # We need awk for the "check" target (and possibly the TAP driver).  The
@@ -3112,7 +3107,7 @@
 Aborting the configuration process, to ensure you take notice of the issue.
 
 You can download and install GNU coreutils to get an 'rm' implementation
-that behaves properly: <http://www.gnu.org/software/coreutils/>.
+that behaves properly: <https://www.gnu.org/software/coreutils/>.
 
 If you want to complete the configuration process using your problematic
 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
@@ -3698,45 +3693,45 @@
 
 ac_config_commands="$ac_config_commands depfiles"
 
-
-am_make=${MAKE-make}
-cat > confinc << 'END'
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} supports the include directive" >&5
+$as_echo_n "checking whether ${MAKE-make} supports the include directive... " >&6; }
+cat > confinc.mk << 'END'
 am__doit:
-	@echo this is the am__doit target
+	@echo this is the am__doit target >confinc.out
 .PHONY: am__doit
 END
-# If we don't find an include directive, just comment out the code.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for style of include used by $am_make" >&5
-$as_echo_n "checking for style of include used by $am_make... " >&6; }
 am__include="#"
 am__quote=
-_am_result=none
-# First try GNU make style include.
-echo "include confinc" > confmf
-# Ignore all kinds of additional output from 'make'.
-case `$am_make -s -f confmf 2> /dev/null` in #(
-*the\ am__doit\ target*)
-  am__include=include
-  am__quote=
-  _am_result=GNU
-  ;;
+# BSD make does it like this.
+echo '.include "confinc.mk" # ignored' > confmf.BSD
+# Other make implementations (GNU, Solaris 10, AIX) do it like this.
+echo 'include confinc.mk # ignored' > confmf.GNU
+_am_result=no
+for s in GNU BSD; do
+  { echo "$as_me:$LINENO: ${MAKE-make} -f confmf.$s && cat confinc.out" >&5
+   (${MAKE-make} -f confmf.$s && cat confinc.out) >&5 2>&5
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   (exit $ac_status); }
+  case $?:`cat confinc.out 2>/dev/null` in #(
+  '0:this is the am__doit target') :
+    case $s in #(
+  BSD) :
+    am__include='.include' am__quote='"' ;; #(
+  *) :
+    am__include='include' am__quote='' ;;
+esac ;; #(
+  *) :
+     ;;
 esac
-# Now try BSD make style include.
-if test "$am__include" = "#"; then
-   echo '.include "confinc"' > confmf
-   case `$am_make -s -f confmf 2> /dev/null` in #(
-   *the\ am__doit\ target*)
-     am__include=.include
-     am__quote="\""
-     _am_result=BSD
-     ;;
-   esac
-fi
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $_am_result" >&5
-$as_echo "$_am_result" >&6; }
-rm -f confinc confmf
+  if test "$am__include" != "#"; then
+    _am_result="yes ($s style)"
+    break
+  fi
+done
+rm -f confinc.* confmf.*
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${_am_result}" >&5
+$as_echo "${_am_result}" >&6; }
 
 # Check whether --enable-dependency-tracking was given.
 if test "${enable_dependency_tracking+set}" = set; then :
@@ -6215,7 +6210,7 @@
 fi
 
 : ${AR=ar}
-: ${AR_FLAGS=cru}
+: ${AR_FLAGS=cr}
 
 
 
@@ -6716,11 +6711,8 @@
   test $ac_status = 0; }; then
     # Now try to grab the symbols.
     nlist=conftest.nm
-    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist\""; } >&5
-  (eval $NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; } && test -s "$nlist"; then
+    $ECHO "$as_me:$LINENO: $NM conftest.$ac_objext | $lt_cv_sys_global_symbol_pipe > $nlist" >&5
+    if eval "$NM" conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist 2>&5 && test -s "$nlist"; then
       # Try sorting and uniquifying the output.
       if sort "$nlist" | uniq > "$nlist"T; then
 	mv -f "$nlist"T "$nlist"
@@ -7939,8 +7931,8 @@
 _LT_EOF
       echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&5
       $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&5
-      echo "$AR cru libconftest.a conftest.o" >&5
-      $AR cru libconftest.a conftest.o 2>&5
+      echo "$AR cr libconftest.a conftest.o" >&5
+      $AR cr libconftest.a conftest.o 2>&5
       echo "$RANLIB libconftest.a" >&5
       $RANLIB libconftest.a 2>&5
       cat > conftest.c << _LT_EOF
@@ -7972,11 +7964,11 @@
       # to the OS version, if on x86, and 10.4, the deployment
       # target defaults to 10.4. Don't you love it?
       case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
-	10.0,*86*-darwin8*|10.0,*-darwin[91]*)
+	10.0,*86*-darwin8*|10.0,*-darwin[912]*)
 	  _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
 	10.[012][,.]*)
 	  _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;;
-	10.*)
+	10.*|11.*)
 	  _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
       esac
     ;;
@@ -9078,6 +9070,12 @@
       ecc*)
 	lt_prog_compiler_wl='-Wl,'
 	lt_prog_compiler_pic='-KPIC'
+	lt_prog_compiler_static='-static'
+        ;;
+      # flang / f18. f95 an alias for gfortran or flang on Debian
+      flang* | f18* | f95*)
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='-fPIC'
 	lt_prog_compiler_static='-static'
         ;;
       # icc used to be incompatible with GCC.
@@ -13022,7 +13020,7 @@
       # Commands to make compiler produce verbose output that lists
       # what "hidden" libraries, object files and flags are used when
       # linking a shared library.
-      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " \-L"'
 
     else
       GXX=no
@@ -13514,7 +13512,7 @@
             # explicitly linking system object files so we need to strip them
             # from the output so that they don't get included in the library
             # dependencies.
-            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "\-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP " \-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
             ;;
           *)
             if test yes = "$GXX"; then
@@ -13579,7 +13577,7 @@
 	    # explicitly linking system object files so we need to strip them
 	    # from the output so that they don't get included in the library
 	    # dependencies.
-	    output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "\-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+	    output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP " \-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
 	    ;;
           *)
 	    if test yes = "$GXX"; then
@@ -13918,7 +13916,7 @@
 	      # Commands to make compiler produce verbose output that lists
 	      # what "hidden" libraries, object files and flags are used when
 	      # linking a shared library.
-	      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " \-L"'
 
 	    else
 	      # FIXME: insert proper C++ library support
@@ -14002,7 +14000,7 @@
 	        # Commands to make compiler produce verbose output that lists
 	        # what "hidden" libraries, object files and flags are used when
 	        # linking a shared library.
-	        output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	        output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " \-L"'
 	      else
 	        # g++ 2.7 appears to require '-G' NOT '-shared' on this
 	        # platform.
@@ -14013,7 +14011,7 @@
 	        # Commands to make compiler produce verbose output that lists
 	        # what "hidden" libraries, object files and flags are used when
 	        # linking a shared library.
-	        output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	        output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " \-L"'
 	      fi
 
 	      hardcode_libdir_flag_spec_CXX='$wl-R $wl$libdir'
@@ -17528,7 +17526,7 @@
 #
 # INIT-COMMANDS
 #
-AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"
+AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"
 
 
 # The HP-UX ksh and POSIX shell print the target directory to stdout
@@ -18614,29 +18612,35 @@
   # Older Autoconf quotes --file arguments for eval, but not when files
   # are listed without --file.  Let's play safe and only enable the eval
   # if we detect the quoting.
-  case $CONFIG_FILES in
-  *\'*) eval set x "$CONFIG_FILES" ;;
-  *)   set x $CONFIG_FILES ;;
-  esac
+  # TODO: see whether this extra hack can be removed once we start
+  # requiring Autoconf 2.70 or later.
+  case $CONFIG_FILES in #(
+  *\'*) :
+    eval set x "$CONFIG_FILES" ;; #(
+  *) :
+    set x $CONFIG_FILES ;; #(
+  *) :
+     ;;
+esac
   shift
-  for mf
+  # Used to flag and report bootstrapping failures.
+  am_rc=0
+  for am_mf
   do
     # Strip MF so we end up with the name of the file.
-    mf=`echo "$mf" | sed -e 's/:.*$//'`
-    # Check whether this is an Automake generated Makefile or not.
-    # We used to match only the files named 'Makefile.in', but
-    # some people rename them; so instead we look at the file content.
-    # Grep'ing the first line is not enough: some people post-process
-    # each Makefile.in and add a new line on top of each file to say so.
-    # Grep'ing the whole file is not good either: AIX grep has a line
+    am_mf=`$as_echo "$am_mf" | sed -e 's/:.*$//'`
+    # Check whether this is an Automake generated Makefile which includes
+    # dependency-tracking related rules and includes.
+    # Grep'ing the whole file directly is not great: AIX grep has a line
     # limit of 2048, but all sed's we know have understand at least 4000.
-    if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
-      dirpart=`$as_dirname -- "$mf" ||
-$as_expr X"$mf" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
-	 X"$mf" : 'X\(//\)[^/]' \| \
-	 X"$mf" : 'X\(//\)$' \| \
-	 X"$mf" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X"$mf" |
+    sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
+      || continue
+    am_dirpart=`$as_dirname -- "$am_mf" ||
+$as_expr X"$am_mf" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$am_mf" : 'X\(//\)[^/]' \| \
+	 X"$am_mf" : 'X\(//\)$' \| \
+	 X"$am_mf" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$am_mf" |
     sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
 	    s//\1/
 	    q
@@ -18654,53 +18658,50 @@
 	    q
 	  }
 	  s/.*/./; q'`
-    else
-      continue
-    fi
-    # Extract the definition of DEPDIR, am__include, and am__quote
-    # from the Makefile without running 'make'.
-    DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
-    test -z "$DEPDIR" && continue
-    am__include=`sed -n 's/^am__include = //p' < "$mf"`
-    test -z "$am__include" && continue
-    am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
-    # Find all dependency output files, they are included files with
-    # $(DEPDIR) in their names.  We invoke sed twice because it is the
-    # simplest approach to changing $(DEPDIR) to its actual value in the
-    # expansion.
-    for file in `sed -n "
-      s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
-	 sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g'`; do
-      # Make sure the directory exists.
-      test -f "$dirpart/$file" && continue
-      fdir=`$as_dirname -- "$file" ||
-$as_expr X"$file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
-	 X"$file" : 'X\(//\)[^/]' \| \
-	 X"$file" : 'X\(//\)$' \| \
-	 X"$file" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X"$file" |
-    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+    am_filepart=`$as_basename -- "$am_mf" ||
+$as_expr X/"$am_mf" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$am_mf" : 'X\(//\)$' \| \
+	 X"$am_mf" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$am_mf" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
 	    s//\1/
 	    q
 	  }
-	  /^X\(\/\/\)[^/].*/{
+	  /^X\/\(\/\/\)$/{
 	    s//\1/
 	    q
 	  }
-	  /^X\(\/\/\)$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\).*/{
+	  /^X\/\(\/\).*/{
 	    s//\1/
 	    q
 	  }
 	  s/.*/./; q'`
-      as_dir=$dirpart/$fdir; as_fn_mkdir_p
-      # echo "creating $dirpart/$file"
-      echo '# dummy' > "$dirpart/$file"
-    done
+    { echo "$as_me:$LINENO: cd "$am_dirpart" \
+      && sed -e '/# am--include-marker/d' "$am_filepart" \
+        | $MAKE -f - am--depfiles" >&5
+   (cd "$am_dirpart" \
+      && sed -e '/# am--include-marker/d' "$am_filepart" \
+        | $MAKE -f - am--depfiles) >&5 2>&5
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   (exit $ac_status); } || am_rc=$?
   done
+  if test $am_rc -ne 0; then
+    { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "Something went wrong bootstrapping makefile fragments
+    for automatic dependency tracking.  If GNU make was not used, consider
+    re-running the configure script with MAKE=\"gmake\" (or whatever is
+    necessary).  You can also try re-running configure with the
+    '--disable-dependency-tracking' option to at least be able to build
+    the package (albeit without support for automatic dependency tracking).
+See \`config.log' for more details" "$LINENO" 5; }
+  fi
+  { am_dirpart=; unset am_dirpart;}
+  { am_filepart=; unset am_filepart;}
+  { am_mf=; unset am_mf;}
+  { am_rc=; unset am_rc;}
+  rm -f conftest-deps.mk
 }
  ;;
     "libtool":C)
diff --git a/depcomp b/depcomp
index b39f98f..6b39162 100755
--- a/depcomp
+++ b/depcomp
@@ -1,9 +1,9 @@
 #! /bin/sh
 # depcomp - compile a program generating dependencies as side-effects
 
-scriptversion=2016-01-11.22; # UTC
-
-# Copyright (C) 1999-2017 Free Software Foundation, Inc.
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1999-2020 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -16,7 +16,7 @@
 # GNU General Public License for more details.
 
 # You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -783,7 +783,7 @@
 # Local Variables:
 # mode: shell-script
 # sh-indentation: 2
-# eval: (add-hook 'write-file-hooks 'time-stamp)
+# eval: (add-hook 'before-save-hook 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
 # time-stamp-time-zone: "UTC0"
diff --git a/docs/Makefile.in b/docs/Makefile.in
index d67b928..a11a54a 100644
--- a/docs/Makefile.in
+++ b/docs/Makefile.in
@@ -1,7 +1,7 @@
-# Makefile.in generated by automake 1.15.1 from Makefile.am.
+# Makefile.in generated by automake 1.16.3 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994-2017 Free Software Foundation, Inc.
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
 
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -311,8 +311,8 @@
 	  *config.status*) \
 	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
 	  *) \
-	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
-	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
 	esac;
 
 $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
@@ -377,7 +377,10 @@
 cscope cscopelist:
 
 
-distdir: $(DISTFILES)
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
 	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
 	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
 	list='$(DISTFILES)'; \
diff --git a/install-sh b/install-sh
index 59990a1..ec298b5 100755
--- a/install-sh
+++ b/install-sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # install - install a program, script, or datafile
 
-scriptversion=2014-09-12.12; # UTC
+scriptversion=2020-11-14.01; # UTC
 
 # This originates from X11R5 (mit/util/scripts/install.sh), which was
 # later released in X11R6 (xc/config/util/install.sh) with the
@@ -69,6 +69,11 @@
 # Desired mode of installed file.
 mode=0755
 
+# Create dirs (including intermediate dirs) using mode 755.
+# This is like GNU 'install' as of coreutils 8.32 (2020).
+mkdir_umask=22
+
+backupsuffix=
 chgrpcmd=
 chmodcmd=$chmodprog
 chowncmd=
@@ -99,18 +104,28 @@
      --version  display version info and exit.
 
   -c            (ignored)
-  -C            install only if different (preserve the last data modification time)
+  -C            install only if different (preserve data modification time)
   -d            create directories instead of installing files.
   -g GROUP      $chgrpprog installed files to GROUP.
   -m MODE       $chmodprog installed files to MODE.
   -o USER       $chownprog installed files to USER.
+  -p            pass -p to $cpprog.
   -s            $stripprog installed files.
+  -S SUFFIX     attempt to back up existing files, with suffix SUFFIX.
   -t DIRECTORY  install into DIRECTORY.
   -T            report an error if DSTFILE is a directory.
 
 Environment variables override the default commands:
   CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
   RMPROG STRIPPROG
+
+By default, rm is invoked with -f; when overridden with RMPROG,
+it's up to you to specify -f if you want it.
+
+If -S is not specified, no backups are attempted.
+
+Email bug reports to bug-automake@gnu.org.
+Automake home page: https://www.gnu.org/software/automake/
 "
 
 while test $# -ne 0; do
@@ -137,7 +152,12 @@
     -o) chowncmd="$chownprog $2"
         shift;;
 
+    -p) cpprog="$cpprog -p";;
+
     -s) stripcmd=$stripprog;;
+
+    -S) backupsuffix="$2"
+        shift;;
 
     -t)
         is_target_a_directory=always
@@ -255,6 +275,10 @@
     dstdir=$dst
     test -d "$dstdir"
     dstdir_status=$?
+    # Don't chown directories that already exist.
+    if test $dstdir_status = 0; then
+      chowncmd=""
+    fi
   else
 
     # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
@@ -271,15 +295,18 @@
     fi
     dst=$dst_arg
 
-    # If destination is a directory, append the input filename; won't work
-    # if double slashes aren't ignored.
+    # If destination is a directory, append the input filename.
     if test -d "$dst"; then
       if test "$is_target_a_directory" = never; then
         echo "$0: $dst_arg: Is a directory" >&2
         exit 1
       fi
       dstdir=$dst
-      dst=$dstdir/`basename "$src"`
+      dstbase=`basename "$src"`
+      case $dst in
+	*/) dst=$dst$dstbase;;
+	*)  dst=$dst/$dstbase;;
+      esac
       dstdir_status=0
     else
       dstdir=`dirname "$dst"`
@@ -288,27 +315,16 @@
     fi
   fi
 
+  case $dstdir in
+    */) dstdirslash=$dstdir;;
+    *)  dstdirslash=$dstdir/;;
+  esac
+
   obsolete_mkdir_used=false
 
   if test $dstdir_status != 0; then
     case $posix_mkdir in
       '')
-        # Create intermediate dirs using mode 755 as modified by the umask.
-        # This is like FreeBSD 'install' as of 1997-10-28.
-        umask=`umask`
-        case $stripcmd.$umask in
-          # Optimize common cases.
-          *[2367][2367]) mkdir_umask=$umask;;
-          .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
-
-          *[0-7])
-            mkdir_umask=`expr $umask + 22 \
-              - $umask % 100 % 40 + $umask % 20 \
-              - $umask % 10 % 4 + $umask % 2
-            `;;
-          *) mkdir_umask=$umask,go-w;;
-        esac
-
         # With -d, create the new directory with the user-specified mode.
         # Otherwise, rely on $mkdir_umask.
         if test -n "$dir_arg"; then
@@ -318,50 +334,49 @@
         fi
 
         posix_mkdir=false
-        case $umask in
-          *[123567][0-7][0-7])
-            # POSIX mkdir -p sets u+wx bits regardless of umask, which
-            # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
-            ;;
-          *)
-            # $RANDOM is not portable (e.g. dash);  use it when possible to
-            # lower collision chance
-            tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
-            trap 'ret=$?; rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null; exit $ret' 0
-
-            # As "mkdir -p" follows symlinks and we work in /tmp possibly;  so
-            # create the $tmpdir first (and fail if unsuccessful) to make sure
-            # that nobody tries to guess the $tmpdir name.
-            if (umask $mkdir_umask &&
-                $mkdirprog $mkdir_mode "$tmpdir" &&
-                exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1
-            then
-              if test -z "$dir_arg" || {
-                   # Check for POSIX incompatibilities with -m.
-                   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
-                   # other-writable bit of parent directory when it shouldn't.
-                   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
-                   test_tmpdir="$tmpdir/a"
-                   ls_ld_tmpdir=`ls -ld "$test_tmpdir"`
-                   case $ls_ld_tmpdir in
-                     d????-?r-*) different_mode=700;;
-                     d????-?--*) different_mode=755;;
-                     *) false;;
-                   esac &&
-                   $mkdirprog -m$different_mode -p -- "$test_tmpdir" && {
-                     ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"`
-                     test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
-                   }
-                 }
-              then posix_mkdir=:
-              fi
-              rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir"
-            else
-              # Remove any dirs left behind by ancient mkdir implementations.
-              rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null
-            fi
-            trap '' 0;;
-        esac;;
+	# The $RANDOM variable is not portable (e.g., dash).  Use it
+	# here however when possible just to lower collision chance.
+	tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
+
+	trap '
+	  ret=$?
+	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null
+	  exit $ret
+	' 0
+
+	# Because "mkdir -p" follows existing symlinks and we likely work
+	# directly in world-writeable /tmp, make sure that the '$tmpdir'
+	# directory is successfully created first before we actually test
+	# 'mkdir -p'.
+	if (umask $mkdir_umask &&
+	    $mkdirprog $mkdir_mode "$tmpdir" &&
+	    exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1
+	then
+	  if test -z "$dir_arg" || {
+	       # Check for POSIX incompatibilities with -m.
+	       # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
+	       # other-writable bit of parent directory when it shouldn't.
+	       # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
+	       test_tmpdir="$tmpdir/a"
+	       ls_ld_tmpdir=`ls -ld "$test_tmpdir"`
+	       case $ls_ld_tmpdir in
+		 d????-?r-*) different_mode=700;;
+		 d????-?--*) different_mode=755;;
+		 *) false;;
+	       esac &&
+	       $mkdirprog -m$different_mode -p -- "$test_tmpdir" && {
+		 ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"`
+		 test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
+	       }
+	     }
+	  then posix_mkdir=:
+	  fi
+	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir"
+	else
+	  # Remove any dirs left behind by ancient mkdir implementations.
+	  rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null
+	fi
+	trap '' 0;;
     esac
 
     if
@@ -372,7 +387,7 @@
     then :
     else
 
-      # The umask is ridiculous, or mkdir does not conform to POSIX,
+      # mkdir does not conform to POSIX,
       # or it failed possibly due to a race condition.  Create the
       # directory the slow way, step by step, checking for races as we go.
 
@@ -401,7 +416,7 @@
           prefixes=
         else
           if $posix_mkdir; then
-            (umask=$mkdir_umask &&
+            (umask $mkdir_umask &&
              $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
             # Don't fail if two instances are running concurrently.
             test -d "$prefix" || exit 1
@@ -434,14 +449,25 @@
   else
 
     # Make a couple of temp file names in the proper directory.
-    dsttmp=$dstdir/_inst.$$_
-    rmtmp=$dstdir/_rm.$$_
+    dsttmp=${dstdirslash}_inst.$$_
+    rmtmp=${dstdirslash}_rm.$$_
 
     # Trap to clean up those temp files at exit.
     trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
 
     # Copy the file name to the temp name.
-    (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
+    (umask $cp_umask &&
+     { test -z "$stripcmd" || {
+	 # Create $dsttmp read-write so that cp doesn't create it read-only,
+	 # which would cause strip to fail.
+	 if test -z "$doit"; then
+	   : >"$dsttmp" # No need to fork-exec 'touch'.
+	 else
+	   $doit touch "$dsttmp"
+	 fi
+       }
+     } &&
+     $doit_exec $cpprog "$src" "$dsttmp") &&
 
     # and set any options; do chmod last to preserve setuid bits.
     #
@@ -467,6 +493,13 @@
     then
       rm -f "$dsttmp"
     else
+      # If $backupsuffix is set, and the file being installed
+      # already exists, attempt a backup.  Don't worry if it fails,
+      # e.g., if mv doesn't support -f.
+      if test -n "$backupsuffix" && test -f "$dst"; then
+        $doit $mvcmd -f "$dst" "$dst$backupsuffix" 2>/dev/null
+      fi
+
       # Rename the file to the real destination.
       $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
 
@@ -481,9 +514,9 @@
         # file should still install successfully.
         {
           test ! -f "$dst" ||
-          $doit $rmcmd -f "$dst" 2>/dev/null ||
+          $doit $rmcmd "$dst" 2>/dev/null ||
           { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
-            { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
+            { $doit $rmcmd "$rmtmp" 2>/dev/null; :; }
           } ||
           { echo "$0: cannot unlink or rename $dst" >&2
             (exit 1); exit 1
@@ -500,9 +533,9 @@
 done
 
 # Local variables:
-# eval: (add-hook 'write-file-hooks 'time-stamp)
+# eval: (add-hook 'before-save-hook 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
+# time-stamp-time-zone: "UTC0"
 # time-stamp-end: "; # UTC"
 # End:
diff --git a/lib/Makefile.in b/lib/Makefile.in
index c67dcb3..3b338c2 100644
--- a/lib/Makefile.in
+++ b/lib/Makefile.in
@@ -1,7 +1,7 @@
-# Makefile.in generated by automake 1.15.1 from Makefile.am.
+# Makefile.in generated by automake 1.16.3 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994-2017 Free Software Foundation, Inc.
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
 
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -367,7 +367,70 @@
 am__v_at_1 = 
 DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
 depcomp = $(SHELL) $(top_srcdir)/depcomp
-am__depfiles_maybe = depfiles
+am__maybe_remake_depfiles = depfiles
+am__depfiles_remade = @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-adler32.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-compress.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-crc32.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-deflate.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-gzclose.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-gzlib.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-gzread.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-gzwrite.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-infback.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-inffast.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-inflate.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-inftrees.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-trees.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-uncompr.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-zutil.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-adler32.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-compress.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-crc32.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-deflate.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-gzclose.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-gzlib.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-gzread.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-gzwrite.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-infback.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-inffast.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-inflate.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-inftrees.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-trees.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-uncompr.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-zutil.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-adler32.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-compress.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-crc32.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-deflate.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-gzclose.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-gzlib.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-gzread.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-gzwrite.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-infback.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-inffast.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-inflate.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-inftrees.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-trees.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-uncompr.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-zutil.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-adler32.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-compress.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-crc32.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-deflate.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-gzclose.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-gzlib.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-gzread.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-gzwrite.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-infback.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-inffast.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-inflate.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-inftrees.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-trees.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-uncompr.Plo \
+	@top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-zutil.Plo \
+	@top_builddir@/source/$(DEPDIR)/Compiler.Plo \
+	@top_builddir@/source/$(DEPDIR)/Engine.Plo \
+	@top_builddir@/source/$(DEPDIR)/UnicodeNames.Plo
 am__mv = mv -f
 COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
 	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
@@ -674,8 +737,8 @@
 	  *config.status*) \
 	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
 	  *) \
-	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
-	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
 	esac;
 $(srcdir)/../source/Makefile.am $(top_srcdir)/source/Public-headers/Makefile.am $(am__empty):
 
@@ -946,69 +1009,75 @@
 distclean-compile:
 	-rm -f *.tab.c
 
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-distdir: $(DISTFILES)
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 distclean: distclean-am
-	-rm -rf @top_builddir@/@ZLIBDIR@/$(DEPDIR) @top_builddir@/source/$(DEPDIR)
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+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-compress.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-crc32.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-deflate.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-gzclose.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-gzlib.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-gzread.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-gzwrite.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-infback.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-inffast.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-inflate.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-inftrees.Plo
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+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_x86_la-adler32.Plo
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+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-trees.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-uncompr.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_Compiler_la-zutil.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-adler32.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-compress.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-crc32.Plo
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+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-infback.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-inffast.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-inflate.Plo
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+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-trees.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-uncompr.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-zutil.Plo
+	-rm -f @top_builddir@/source/$(DEPDIR)/Compiler.Plo
+	-rm -f @top_builddir@/source/$(DEPDIR)/Engine.Plo
+	-rm -f @top_builddir@/source/$(DEPDIR)/UnicodeNames.Plo
 	-rm -f Makefile
 distclean-am: clean-am distclean-compile distclean-generic \
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@@ -1682,7 +1816,69 @@
 installcheck-am:
 
 maintainer-clean: maintainer-clean-am
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+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-compress.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-crc32.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-deflate.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-gzclose.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-gzlib.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-gzread.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-gzwrite.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-infback.Plo
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+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-inftrees.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-trees.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-uncompr.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/TECkit_Compiler_x86_la-zutil.Plo
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+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-uncompr.Plo
+	-rm -f @top_builddir@/@ZLIBDIR@/$(DEPDIR)/libTECkit_la-zutil.Plo
+	-rm -f @top_builddir@/source/$(DEPDIR)/Compiler.Plo
+	-rm -f @top_builddir@/source/$(DEPDIR)/Engine.Plo
+	-rm -f @top_builddir@/source/$(DEPDIR)/UnicodeNames.Plo
 	-rm -f Makefile
 maintainer-clean-am: distclean-am maintainer-clean-generic
 
@@ -1703,9 +1899,9 @@
 
 .MAKE: install-am install-strip
 
-.PHONY: CTAGS GTAGS TAGS all all-am check check-am clean clean-generic \
-	clean-libLTLIBRARIES clean-libtool cscopelist-am ctags \
-	ctags-am distclean distclean-compile distclean-generic \
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
+	clean-generic clean-libLTLIBRARIES clean-libtool cscopelist-am \
+	ctags ctags-am distclean distclean-compile distclean-generic \
 	distclean-libtool distclean-tags distdir dvi dvi-am html \
 	html-am info info-am install install-am install-data \
 	install-data-am install-dvi install-dvi-am install-exec \
diff --git a/ltmain.sh b/ltmain.sh
old file mode 100644
new file mode 100755
index a736cf9..21e5e07 100755
--- a/ltmain.sh
+++ b/ltmain.sh
@@ -31,7 +31,7 @@
 
 PROGRAM=libtool
 PACKAGE=libtool
-VERSION="2.4.6 Debian-2.4.6-2"
+VERSION="2.4.6 Debian-2.4.6-15"
 package_revision=2.4.6
 
 
@@ -387,7 +387,7 @@
 # putting '$debug_cmd' at the start of all your functions, you can get
 # bash to show function call trace with:
 #
-#    debug_cmd='eval echo "${FUNCNAME[0]} $*" >&2' bash your-script-name
+#    debug_cmd='echo "${FUNCNAME[0]} $*" >&2' bash your-script-name
 debug_cmd=${debug_cmd-":"}
 exit_cmd=:
 
@@ -1370,7 +1370,7 @@
 #! /bin/sh
 
 # Set a version string for this script.
-scriptversion=2014-01-07.03; # UTC
+scriptversion=2015-10-07.11; # UTC
 
 # A portable, pluggable option parser for Bourne shell.
 # Written by Gary V. Vaughan, 2010
@@ -1530,6 +1530,8 @@
 {
     $debug_cmd
 
+    _G_rc_run_hooks=false
+
     case " $hookable_fns " in
       *" $1 "*) ;;
       *) func_fatal_error "'$1' does not support hook funcions.n" ;;
@@ -1538,16 +1540,16 @@
     eval _G_hook_fns=\$$1_hooks; shift
 
     for _G_hook in $_G_hook_fns; do
-      eval $_G_hook '"$@"'
-
-      # store returned options list back into positional
-      # parameters for next 'cmd' execution.
-      eval _G_hook_result=\$${_G_hook}_result
-      eval set dummy "$_G_hook_result"; shift
+      if eval $_G_hook '"$@"'; then
+        # store returned options list back into positional
+        # parameters for next 'cmd' execution.
+        eval _G_hook_result=\$${_G_hook}_result
+        eval set dummy "$_G_hook_result"; shift
+        _G_rc_run_hooks=:
+      fi
     done
 
-    func_quote_for_eval ${1+"$@"}
-    func_run_hooks_result=$func_quote_for_eval_result
+    $_G_rc_run_hooks && func_run_hooks_result=$_G_hook_result
 }
 
 
@@ -1557,10 +1559,16 @@
 ## --------------- ##
 
 # In order to add your own option parsing hooks, you must accept the
-# full positional parameter list in your hook function, remove any
-# options that you action, and then pass back the remaining unprocessed
+# full positional parameter list in your hook function, you may remove/edit
+# any options that you action, and then pass back the remaining unprocessed
 # options in '<hooked_function_name>_result', escaped suitably for
-# 'eval'.  Like this:
+# 'eval'.  In this case you also must return $EXIT_SUCCESS to let the
+# hook's caller know that it should pay attention to
+# '<hooked_function_name>_result'.  Returning $EXIT_FAILURE signalizes that
+# arguments are left untouched by the hook and therefore caller will ignore the
+# result variable.
+#
+# Like this:
 #
 #    my_options_prep ()
 #    {
@@ -1570,9 +1578,11 @@
 #        usage_message=$usage_message'
 #      -s, --silent       don'\''t print informational messages
 #    '
-#
-#        func_quote_for_eval ${1+"$@"}
-#        my_options_prep_result=$func_quote_for_eval_result
+#        # No change in '$@' (ignored completely by this hook).  There is
+#        # no need to do the equivalent (but slower) action:
+#        # func_quote_for_eval ${1+"$@"}
+#        # my_options_prep_result=$func_quote_for_eval_result
+#        false
 #    }
 #    func_add_hook func_options_prep my_options_prep
 #
@@ -1581,25 +1591,37 @@
 #    {
 #        $debug_cmd
 #
+#        args_changed=false
+#
 #        # Note that for efficiency, we parse as many options as we can
 #        # recognise in a loop before passing the remainder back to the
 #        # caller on the first unrecognised argument we encounter.
 #        while test $# -gt 0; do
 #          opt=$1; shift
 #          case $opt in
-#            --silent|-s) opt_silent=: ;;
+#            --silent|-s) opt_silent=:
+#                         args_changed=:
+#                         ;;
 #            # Separate non-argument short options:
 #            -s*)         func_split_short_opt "$_G_opt"
 #                         set dummy "$func_split_short_opt_name" \
 #                             "-$func_split_short_opt_arg" ${1+"$@"}
 #                         shift
+#                         args_changed=:
 #                         ;;
-#            *)            set dummy "$_G_opt" "$*"; shift; break ;;
+#            *)           # Make sure the first unrecognised option "$_G_opt"
+#                         # is added back to "$@", we could need that later
+#                         # if $args_changed is true.
+#                         set dummy "$_G_opt" ${1+"$@"}; shift; break ;;
 #          esac
 #        done
 #
-#        func_quote_for_eval ${1+"$@"}
-#        my_silent_option_result=$func_quote_for_eval_result
+#        if $args_changed; then
+#          func_quote_for_eval ${1+"$@"}
+#          my_silent_option_result=$func_quote_for_eval_result
+#        fi
+#
+#        $args_changed
 #    }
 #    func_add_hook func_parse_options my_silent_option
 #
@@ -1611,14 +1633,30 @@
 #        $opt_silent && $opt_verbose && func_fatal_help "\
 #    '--silent' and '--verbose' options are mutually exclusive."
 #
-#        func_quote_for_eval ${1+"$@"}
-#        my_option_validation_result=$func_quote_for_eval_result
+#        false
 #    }
 #    func_add_hook func_validate_options my_option_validation
 #
-# You'll alse need to manually amend $usage_message to reflect the extra
+# You'll also need to manually amend $usage_message to reflect the extra
 # options you parse.  It's preferable to append if you can, so that
 # multiple option parsing hooks can be added safely.
+
+
+# func_options_finish [ARG]...
+# ----------------------------
+# Finishing the option parse loop (call 'func_options' hooks ATM).
+func_options_finish ()
+{
+    $debug_cmd
+
+    _G_func_options_finish_exit=false
+    if func_run_hooks func_options ${1+"$@"}; then
+      func_options_finish_result=$func_run_hooks_result
+      _G_func_options_finish_exit=:
+    fi
+
+    $_G_func_options_finish_exit
+}
 
 
 # func_options [ARG]...
@@ -1630,17 +1668,28 @@
 {
     $debug_cmd
 
-    func_options_prep ${1+"$@"}
-    eval func_parse_options \
-        ${func_options_prep_result+"$func_options_prep_result"}
-    eval func_validate_options \
-        ${func_parse_options_result+"$func_parse_options_result"}
-
-    eval func_run_hooks func_options \
-        ${func_validate_options_result+"$func_validate_options_result"}
-
-    # save modified positional parameters for caller
-    func_options_result=$func_run_hooks_result
+    _G_rc_options=false
+
+    for my_func in options_prep parse_options validate_options options_finish
+    do
+      if eval func_$my_func '${1+"$@"}'; then
+        eval _G_res_var='$'"func_${my_func}_result"
+        eval set dummy "$_G_res_var" ; shift
+        _G_rc_options=:
+      fi
+    done
+
+    # Save modified positional parameters for caller.  As a top-level
+    # options-parser function we always need to set the 'func_options_result'
+    # variable (regardless the $_G_rc_options value).
+    if $_G_rc_options; then
+      func_options_result=$_G_res_var
+    else
+      func_quote_for_eval ${1+"$@"}
+      func_options_result=$func_quote_for_eval_result
+    fi
+
+    $_G_rc_options
 }
 
 
@@ -1649,9 +1698,9 @@
 # All initialisations required before starting the option parse loop.
 # Note that when calling hook functions, we pass through the list of
 # positional parameters.  If a hook function modifies that list, and
-# needs to propogate that back to rest of this script, then the complete
+# needs to propagate that back to rest of this script, then the complete
 # modified list must be put in 'func_run_hooks_result' before
-# returning.
+# returning $EXIT_SUCCESS (otherwise $EXIT_FAILURE is returned).
 func_hookable func_options_prep
 func_options_prep ()
 {
@@ -1661,10 +1710,14 @@
     opt_verbose=false
     opt_warning_types=
 
-    func_run_hooks func_options_prep ${1+"$@"}
-
-    # save modified positional parameters for caller
-    func_options_prep_result=$func_run_hooks_result
+    _G_rc_options_prep=false
+    if func_run_hooks func_options_prep ${1+"$@"}; then
+      _G_rc_options_prep=:
+      # save modified positional parameters for caller
+      func_options_prep_result=$func_run_hooks_result
+    fi
+
+    $_G_rc_options_prep
 }
 
 
@@ -1678,18 +1731,20 @@
 
     func_parse_options_result=
 
+    _G_rc_parse_options=false
     # this just eases exit handling
     while test $# -gt 0; do
       # Defer to hook functions for initial option parsing, so they
       # get priority in the event of reusing an option name.
-      func_run_hooks func_parse_options ${1+"$@"}
-
-      # Adjust func_parse_options positional parameters to match
-      eval set dummy "$func_run_hooks_result"; shift
+      if func_run_hooks func_parse_options ${1+"$@"}; then
+        eval set dummy "$func_run_hooks_result"; shift
+        _G_rc_parse_options=:
+      fi
 
       # Break out of the loop if we already parsed every option.
       test $# -gt 0 || break
 
+      _G_match_parse_options=:
       _G_opt=$1
       shift
       case $_G_opt in
@@ -1704,7 +1759,10 @@
 		      ;;
 
         --warnings|--warning|-W)
-                      test $# = 0 && func_missing_arg $_G_opt && break
+                      if test $# = 0 && func_missing_arg $_G_opt; then
+                        _G_rc_parse_options=:
+                        break
+                      fi
                       case " $warning_categories $1" in
                         *" $1 "*)
                           # trailing space prevents matching last $1 above
@@ -1757,15 +1815,25 @@
                       shift
                       ;;
 
-        --)           break ;;
+        --)           _G_rc_parse_options=: ; break ;;
         -*)           func_fatal_help "unrecognised option: '$_G_opt'" ;;
-        *)            set dummy "$_G_opt" ${1+"$@"}; shift; break ;;
+        *)            set dummy "$_G_opt" ${1+"$@"}; shift
+                      _G_match_parse_options=false
+                      break
+                      ;;
       esac
+
+      $_G_match_parse_options && _G_rc_parse_options=:
     done
 
-    # save modified positional parameters for caller
-    func_quote_for_eval ${1+"$@"}
-    func_parse_options_result=$func_quote_for_eval_result
+
+    if $_G_rc_parse_options; then
+      # save modified positional parameters for caller
+      func_quote_for_eval ${1+"$@"}
+      func_parse_options_result=$func_quote_for_eval_result
+    fi
+
+    $_G_rc_parse_options
 }
 
 
@@ -1778,16 +1846,21 @@
 {
     $debug_cmd
 
+    _G_rc_validate_options=false
+
     # Display all warnings if -W was not given.
     test -n "$opt_warning_types" || opt_warning_types=" $warning_categories"
 
-    func_run_hooks func_validate_options ${1+"$@"}
+    if func_run_hooks func_validate_options ${1+"$@"}; then
+      # save modified positional parameters for caller
+      func_validate_options_result=$func_run_hooks_result
+      _G_rc_validate_options=:
+    fi
 
     # Bail if the options were screwed!
     $exit_cmd $EXIT_FAILURE
 
-    # save modified positional parameters for caller
-    func_validate_options_result=$func_run_hooks_result
+    $_G_rc_validate_options
 }
 
 
@@ -2068,7 +2141,7 @@
        compiler:       $LTCC
        compiler flags: $LTCFLAGS
        linker:         $LD (gnu? $with_gnu_ld)
-       version:        $progname $scriptversion Debian-2.4.6-2
+       version:        $progname $scriptversion Debian-2.4.6-15
        automake:       `($AUTOMAKE --version) 2>/dev/null |$SED 1q`
        autoconf:       `($AUTOCONF --version) 2>/dev/null |$SED 1q`
 
@@ -2270,6 +2343,8 @@
     nonopt=
     preserve_args=
 
+    _G_rc_lt_options_prep=:
+
     # Shorthand for --mode=foo, only valid as the first argument
     case $1 in
     clean|clea|cle|cl)
@@ -2293,11 +2368,18 @@
     uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u)
       shift; set dummy --mode uninstall ${1+"$@"}; shift
       ;;
+    *)
+      _G_rc_lt_options_prep=false
+      ;;
     esac
 
-    # Pass back the list of options.
-    func_quote_for_eval ${1+"$@"}
-    libtool_options_prep_result=$func_quote_for_eval_result
+    if $_G_rc_lt_options_prep; then
+      # Pass back the list of options.
+      func_quote_for_eval ${1+"$@"}
+      libtool_options_prep_result=$func_quote_for_eval_result
+    fi
+
+    $_G_rc_lt_options_prep
 }
 func_add_hook func_options_prep libtool_options_prep
 
@@ -2309,9 +2391,12 @@
 {
     $debug_cmd
 
+    _G_rc_lt_parse_options=false
+
     # Perform our own loop to consume as many options as possible in
     # each iteration.
     while test $# -gt 0; do
+      _G_match_lt_parse_options=:
       _G_opt=$1
       shift
       case $_G_opt in
@@ -2386,15 +2471,22 @@
                         func_append preserve_args " $_G_opt"
                         ;;
 
-	# An option not handled by this hook function:
-        *)		set dummy "$_G_opt" ${1+"$@"};	shift; break  ;;
+        # An option not handled by this hook function:
+        *)              set dummy "$_G_opt" ${1+"$@"} ; shift
+                        _G_match_lt_parse_options=false
+                        break
+                        ;;
       esac
+      $_G_match_lt_parse_options && _G_rc_lt_parse_options=:
     done
 
-
-    # save modified positional parameters for caller
-    func_quote_for_eval ${1+"$@"}
-    libtool_parse_options_result=$func_quote_for_eval_result
+    if $_G_rc_lt_parse_options; then
+      # save modified positional parameters for caller
+      func_quote_for_eval ${1+"$@"}
+      libtool_parse_options_result=$func_quote_for_eval_result
+    fi
+
+    $_G_rc_lt_parse_options
 }
 func_add_hook func_parse_options libtool_parse_options
 
@@ -7275,10 +7367,13 @@
       # -specs=*             GCC specs files
       # -stdlib=*            select c++ std lib with clang
       # -fsanitize=*         Clang/GCC memory and address sanitizer
+      # -fuse-ld=*           Linker select flags for GCC
+      # -static-*            direct GCC to link specific libraries statically
+      # -fcilkplus           Cilk Plus language extension features for C/C++
       -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
       -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \
       -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*| \
-      -specs=*|-fsanitize=*)
+      -specs=*|-fsanitize=*|-fuse-ld=*|-static-*|-fcilkplus)
         func_quote_for_eval "$arg"
 	arg=$func_quote_for_eval_result
         func_append compile_command " $arg"
diff --git a/m4/libtool.m4 b/m4/libtool.m4
index ee80844..c4c0294 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -1041,8 +1041,8 @@
 _LT_EOF
       echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&AS_MESSAGE_LOG_FD
       $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&AS_MESSAGE_LOG_FD
-      echo "$AR cru libconftest.a conftest.o" >&AS_MESSAGE_LOG_FD
-      $AR cru libconftest.a conftest.o 2>&AS_MESSAGE_LOG_FD
+      echo "$AR cr libconftest.a conftest.o" >&AS_MESSAGE_LOG_FD
+      $AR cr libconftest.a conftest.o 2>&AS_MESSAGE_LOG_FD
       echo "$RANLIB libconftest.a" >&AS_MESSAGE_LOG_FD
       $RANLIB libconftest.a 2>&AS_MESSAGE_LOG_FD
       cat > conftest.c << _LT_EOF
@@ -1071,11 +1071,11 @@
       # to the OS version, if on x86, and 10.4, the deployment
       # target defaults to 10.4. Don't you love it?
       case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
-	10.0,*86*-darwin8*|10.0,*-darwin[[91]]*)
+	10.0,*86*-darwin8*|10.0,*-darwin[[912]]*)
 	  _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
 	10.[[012]][[,.]]*)
 	  _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;;
-	10.*)
+	10.*|11.*)
 	  _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
       esac
     ;;
@@ -1492,7 +1492,7 @@
 m4_defun([_LT_PROG_AR],
 [AC_CHECK_TOOLS(AR, [ar], false)
 : ${AR=ar}
-: ${AR_FLAGS=cru}
+: ${AR_FLAGS=cr}
 _LT_DECL([], [AR], [1], [The archiver])
 _LT_DECL([], [AR_FLAGS], [1], [Flags to create an archive])
 
@@ -4063,7 +4063,8 @@
   if AC_TRY_EVAL(ac_compile); then
     # Now try to grab the symbols.
     nlist=conftest.nm
-    if AC_TRY_EVAL(NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) && test -s "$nlist"; then
+    $ECHO "$as_me:$LINENO: $NM conftest.$ac_objext | $lt_cv_sys_global_symbol_pipe > $nlist" >&AS_MESSAGE_LOG_FD
+    if eval "$NM" conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist 2>&AS_MESSAGE_LOG_FD && test -s "$nlist"; then
       # Try sorting and uniquifying the output.
       if sort "$nlist" | uniq > "$nlist"T; then
 	mv -f "$nlist"T "$nlist"
@@ -4703,6 +4704,12 @@
 	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
 	_LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
         ;;
+      # flang / f18. f95 an alias for gfortran or flang on Debian
+      flang* | f18* | f95*)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+        ;;
       # icc used to be incompatible with GCC.
       # ICC 10 doesn't accept -KPIC any more.
       icc* | ifort*)
@@ -6438,7 +6445,7 @@
       # Commands to make compiler produce verbose output that lists
       # what "hidden" libraries, object files and flags are used when
       # linking a shared library.
-      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " \-L"'
 
     else
       GXX=no
@@ -6813,7 +6820,7 @@
             # explicitly linking system object files so we need to strip them
             # from the output so that they don't get included in the library
             # dependencies.
-            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "\-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP " \-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
             ;;
           *)
             if test yes = "$GXX"; then
@@ -6878,7 +6885,7 @@
 	    # explicitly linking system object files so we need to strip them
 	    # from the output so that they don't get included in the library
 	    # dependencies.
-	    output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "\-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+	    output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP " \-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
 	    ;;
           *)
 	    if test yes = "$GXX"; then
@@ -7217,7 +7224,7 @@
 	      # Commands to make compiler produce verbose output that lists
 	      # what "hidden" libraries, object files and flags are used when
 	      # linking a shared library.
-	      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " \-L"'
 
 	    else
 	      # FIXME: insert proper C++ library support
@@ -7301,7 +7308,7 @@
 	        # Commands to make compiler produce verbose output that lists
 	        # what "hidden" libraries, object files and flags are used when
 	        # linking a shared library.
-	        output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	        output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " \-L"'
 	      else
 	        # g++ 2.7 appears to require '-G' NOT '-shared' on this
 	        # platform.
@@ -7312,7 +7319,7 @@
 	        # Commands to make compiler produce verbose output that lists
 	        # what "hidden" libraries, object files and flags are used when
 	        # linking a shared library.
-	        output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	        output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " \-L"'
 	      fi
 
 	      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-R $wl$libdir'
diff --git a/missing b/missing
index f62bbae..8d0eaad 100755
--- a/missing
+++ b/missing
@@ -1,9 +1,9 @@
 #! /bin/sh
 # Common wrapper for a few potentially missing GNU programs.
 
-scriptversion=2013-10-28.13; # UTC
-
-# Copyright (C) 1996-2014 Free Software Foundation, Inc.
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
 # Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
 
 # This program is free software; you can redistribute it and/or modify
@@ -17,7 +17,7 @@
 # GNU General Public License for more details.
 
 # You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -101,9 +101,9 @@
   exit $st
 fi
 
-perl_URL=http://www.perl.org/
-flex_URL=http://flex.sourceforge.net/
-gnu_software_URL=http://www.gnu.org/software
+perl_URL=https://www.perl.org/
+flex_URL=https://github.com/westes/flex
+gnu_software_URL=https://www.gnu.org/software
 
 program_details ()
 {
@@ -207,9 +207,9 @@
 exit $st
 
 # Local variables:
-# eval: (add-hook 'write-file-hooks 'time-stamp)
+# eval: (add-hook 'before-save-hook 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
+# time-stamp-time-zone: "UTC0"
 # time-stamp-end: "; # UTC"
 # End:
diff --git a/test/Makefile.in b/test/Makefile.in
index 5c97fb2..6911ee3 100644
--- a/test/Makefile.in
+++ b/test/Makefile.in
@@ -1,7 +1,7 @@
-# Makefile.in generated by automake 1.15.1 from Makefile.am.
+# Makefile.in generated by automake 1.16.3 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994-2017 Free Software Foundation, Inc.
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
 
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -304,6 +304,7 @@
   bases='$(TEST_LOGS)'; \
   bases=`for i in $$bases; do echo $$i; done | sed 's/\.log$$//'`; \
   bases=`echo $$bases`
+AM_TESTSUITE_SUMMARY_HEADER = ' for $(PACKAGE_STRING)'
 RECHECK_LOGS = $(TEST_LOGS)
 AM_RECURSIVE_TARGETS = check recheck
 TEST_SUITE_LOG = test-suite.log
@@ -491,8 +492,8 @@
 	  *config.status*) \
 	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
 	  *) \
-	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
-	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
 	esac;
 
 $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
@@ -623,7 +624,7 @@
 	  test x"$$VERBOSE" = x || cat $(TEST_SUITE_LOG);		\
 	fi;								\
 	echo "$${col}$$br$${std}"; 					\
-	echo "$${col}Testsuite summary for $(PACKAGE_STRING)$${std}";	\
+	echo "$${col}Testsuite summary"$(AM_TESTSUITE_SUMMARY_HEADER)"$${std}";	\
 	echo "$${col}$$br$${std}"; 					\
 	create_testsuite_report --maybe-color;				\
 	echo "$$col$$br$$std";						\
@@ -636,7 +637,7 @@
 	fi;								\
 	$$success || exit 1
 
-check-TESTS:
+check-TESTS: $(check_SCRIPTS) $(check_DATA)
 	@list='$(RECHECK_LOGS)';           test -z "$$list" || rm -f $$list
 	@list='$(RECHECK_LOGS:.log=.trs)'; test -z "$$list" || rm -f $$list
 	@test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
@@ -679,7 +680,10 @@
 @am__EXEEXT_TRUE@	$(am__common_driver_flags) $(AM_TEST_LOG_DRIVER_FLAGS) $(TEST_LOG_DRIVER_FLAGS) -- $(TEST_LOG_COMPILE) \
 @am__EXEEXT_TRUE@	"$$tst" $(AM_TESTS_FD_REDIRECT)
 
-distdir: $(DISTFILES)
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
 	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
 	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
 	list='$(DISTFILES)'; \
diff --git a/test-driver b/test-driver
index 8e575b0..9759384 100755
--- a/test-driver
+++ b/test-driver
@@ -1,9 +1,9 @@
 #! /bin/sh
 # test-driver - basic testsuite driver script.
 
-scriptversion=2013-07-13.22; # UTC
+scriptversion=2018-03-07.03; # UTC
 
-# Copyright (C) 2011-2014 Free Software Foundation, Inc.
+# Copyright (C) 2011-2020 Free Software Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -16,7 +16,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -42,11 +42,13 @@
 {
   cat <<END
 Usage:
-  test-driver --test-name=NAME --log-file=PATH --trs-file=PATH
-              [--expect-failure={yes|no}] [--color-tests={yes|no}]
-              [--enable-hard-errors={yes|no}] [--]
+  test-driver --test-name NAME --log-file PATH --trs-file PATH
+              [--expect-failure {yes|no}] [--color-tests {yes|no}]
+              [--enable-hard-errors {yes|no}] [--]
               TEST-SCRIPT [TEST-SCRIPT-ARGUMENTS]
+
 The '--test-name', '--log-file' and '--trs-file' options are mandatory.
+See the GNU Automake documentation for information.
 END
 }
 
@@ -140,9 +142,9 @@
 # Local Variables:
 # mode: shell-script
 # sh-indentation: 2
-# eval: (add-hook 'write-file-hooks 'time-stamp)
+# eval: (add-hook 'before-save-hook 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
+# time-stamp-time-zone: "UTC0"
 # time-stamp-end: "; # UTC"
 # End: