OS X: change the Xcode development version on xibs to "default" (6.0).

git-svn-id: https://pcsxr.svn.codeplex.com/svn@91640 e17a0e51-4ae3-4d35-97c3-1a29b211df97
OS X: Fix slow boot.

git-svn-id: https://pcsxr.svn.codeplex.com/svn@91641 e17a0e51-4ae3-4d35-97c3-1a29b211df97
OS X: minor maintenance:
Remove reference to "SJIS name": It wasn't being used anymore.
Strip headers from SDL2 when copying it over: we don't need those files.

git-svn-id: https://pcsxr.svn.codeplex.com/svn@91642 e17a0e51-4ae3-4d35-97c3-1a29b211df97
OS X: Make PluginList comply with the NSFastEnumeration protocol.

git-svn-id: https://pcsxr.svn.codeplex.com/svn@91643 e17a0e51-4ae3-4d35-97c3-1a29b211df97