[Mono-osx] Revamped MacOS installer build process

[Wade Berrier]

Hi,

I've revamped the Mac OSX installer a little in order to integrate it
into the Mono build/release system.  This will ease macosx builds and
provide timely builds when Mono releases.

I've spent a good deal of time making sure this package will perform
just as previous packages.

If you'd like to test it out, here's the link:

http://primates.ximian.com/~wberrier/tmp/1.1.13.2/macos-10-ppc/1/MonoFramework-1.1.13.2_1.macos10.novell.ppc.dmg

Feedback is appreciated,

Wade