ModifyPath - Modify a path in different ways and the print the result. The

         modification could for example be to remove the path part, or

         extracting the extension only. Useful for scripting.

Usage: ModifyPath PATH/A,NOPATHPART/S,NOFILEPART/S,NOEXTENSION/S,ADDSLASH/S

PATH The path to modify.

NOPATHPART Modify it to have no path part.

NOFILEPART Modify it to have no file part.

NOEXTENSION Modify it to have no extension.

ADDSLASH Add a trailing slash if required to make sure it is not treated as

         a file.