another quartz maintainance request (patch review & commit)

[Paul Davis <paul linuxaudiosystems com>]

This bug report: https://bugzilla.gnome.org/show_bug.cgi?id=594738
contains a potentially important fix to make 2+ monitors work with
GTK/Quartz. Those of us in the GTK/Quartz "community" would appreciate
someone with commit rights (1) looking at christian's approach and
forming a judgement on whether its the right approach to the problem
(2) committing this or some eventual fix.

Things are looking pretty bad for GTK/Quartz maintainance right now.
Nobody that has commit access appears to be in a position to test
(i.e. "care") about Quartz fixes; those who care do not have commit
access. It would be hugely preferable (IMHO) for us to not to have to
"branch" to an alternate git repo ...

--p