08-25-2006 Aurélien Croc
* Add other compressin algorithms (0x12 for text!) ?
* Stop sending the job if a SIGTERM is received
* Catch for the cancel button pressed
11-25-2008 Aurélien Croc
* Rewrite in another way the compress.cpp for generalization of the
runtime compression algorithm modification
* Check the qpdl.cpp for a better code