Continual improvement to OS X code.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@86890 e17a0e51-4ae3-4d35-97c3-1a29b211df97
OS X:
Replace CFStringCreateByCombiningStrings with NSArray's componentsJoinedByString:.
Moving some class interfaces out of CheatController.h to CheatController.m

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@86897 e17a0e51-4ae3-4d35-97c3-1a29b211df97
Remove commented-out code.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@86898 e17a0e51-4ae3-4d35-97c3-1a29b211df97