OS X:
Fix an annoying GUI bug when moving to the plug-in tab in Preferences.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@89781 e17a0e51-4ae3-4d35-97c3-1a29b211df97
OS X:
Stop the memory card images from animating when the preferences window closes.
Other changes and improvements.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@89782 e17a0e51-4ae3-4d35-97c3-1a29b211df97