#20 Xcode3 build env

[Tom Huffman]

Add Xcode3 build projects.

Easy build by loading <root>/Mac OS X/gtk+-osx.xcodeproj and selecting the "gtk+-osx Install Public" target. This will build and install gtk+-osx into the /Library/Frameworks directory, and can then be used in Xcode with by adding the glib, gdk, and gtk frameworks to your project.

Other provided targets are:
"gtk+-osx (Embedded)" which build a version that needs to be installed as a private framework in your application bundle.

"gtk+-osx (Public)" which builds a public version of the framework, but does not install it.

"Clean Source Tree" which removes all of the build prodects, but does not uninstall any frameworks installed by the "gtk+-osx Install Public" target.

To uninstall from the /Library/Frameworks folder simply drag the frameworks directories to the trash.

[Tom Huffman]