make macosx

[rpspringuel]

Right now there's a create-package.sh script in the macosx folder which can be used to create the package installers for Mac. It would probably be better if there was a make target to create these packages. This might still require a use of the script because of some of the build steps involved. However, doing this would eliminate some of the conflicts between the build script and the make system (for instance, the script assumes a build from scratch and cleans to maintainer-clean, making it difficult to deploy along side other build processes).

Seeing as I'm the only one with a Mac currently, I'll probably be the one to do this, but I want to create a reminder for myself by posting an issue.