Better settings for GTK print to file to reduce required application code

[Timothy Arceri <t_arceri yahoo com au>]

Hi Guys,

              I have attached a patch to https://bugzilla.gnome.org/show_bug.cgi?id=657322 to allow better settings for GTK print to file to reduce required application code required to change the default filename. For more information see bug comment 1.

Could someone with authority to do so please review my patch (its not very big), I'm open to new names for the setting constants as these as just what was suggested by the gedit developer.

Thanks for your time,

Tim