Mozilla now supports Cups directly.

Original code from Michael Kaply (IBM) <mozilla@kaply.com>
https://bugzilla.mozilla.org/show_bug.cgi?id=251754
[The showprinters.c file uses Kaply's code]

New rewritten code:
http://lxr.mozilla.org/seamonkey/source/gfx/src/psshared/nsPSPrinters.cpp#99
