OS X: Forgot to update one credits file.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@89824 e17a0e51-4ae3-4d35-97c3-1a29b211df97
OS X: Fiddle with a xib.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@89825 e17a0e51-4ae3-4d35-97c3-1a29b211df97
OS X: initially center windows via their xibs.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@89826 e17a0e51-4ae3-4d35-97c3-1a29b211df97
OS X: minor xib change.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@89827 e17a0e51-4ae3-4d35-97c3-1a29b211df97
DFInput: Implement SDL2 GameController support.
This change allows the user to use SDL2’s GameController API instead of the Joystick API.
The Game Controller API maps the buttons similar to an Xbox 360 controller, so some tricky mapping needed to be done.
Note that it currently only supports OS X.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@89828 e17a0e51-4ae3-4d35-97c3-1a29b211df97
OS X: Add a comment.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@89829 e17a0e51-4ae3-4d35-97c3-1a29b211df97