Move Quartz Display utility functions into shared library (cg_utils.c).
Modify Makefile to build targets with Quartz funcitons in shared C-library (see last commit).
Use 'pkgbuild' utility rather than deprecated 'PackageMaker' to create the OS X Package Installer.
Simply build targets and clean-up method from John Ford's comments on pull request.
Simplify build targets and 'make clean' target from John Ford's comments on my pull request.