LilyPond Mac GUI update

[Patrick McCarty]

Hello LilyPond developers!

Some improvements to the Mac GUI have been integrated into GUB.  You
can find the list of changes here:

http://codereview.appspot.com/88076/show

Graham and I would appreciate any feedback on functionality from those
running Mac OS X 10.3, 10.4, or 10.5.  The test installers can be
found here:

Intel Macs:
http://uoregon.edu/~pmccarty/download/lilypond-2.13.3-0.darwin-x86.tar.bz2

PPC Macs:
http://uoregon.edu/~pmccarty/download/lilypond-2.13.3-0.darwin-ppc.tar.bz2


I can report success with Mac OS X 10.5.6 (both versions).  If these
work, Graham will roll another development release with the changes.
Many thanks to Christian Hitz for all of the improvements!

Thanks,
Patrick