$Id: README 5191 2013-02-23 00:11:18Z karl $
texinfo/install-info/README

  Copyright 2008, 2011, 2012 Free Software Foundation, Inc.

  Copying and distribution of this file, with or without modification,
  are permitted in any medium without royalty provided the copyright
  notice and this notice are preserved.

install-info updates the top-level dir file in the Info tree.
(It does not actually install .info files into the Info directory, oddly
enough.)