Directory Processing

Adds   support   for  directories   as   input. No
recursion,  only  image  files  directly  in  that
directory are processed.

Adds  incremental  counter   to  files  in  output
directory   so  that   existing   files  are   not
overwritten by new files with same name.

 On branch master

 Changes to be committed:
	modified:   image-process.pl