Better checking if we are launched from the Finder if we are on Mavericks. Code adapted from the 1.2 fork of SDL.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@88202 e17a0e51-4ae3-4d35-97c3-1a29b211df97
OS X:
Check to see if a BIOS file has been passed to us, and ask if the user wants to move or copy the BIOS over.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@88203 e17a0e51-4ae3-4d35-97c3-1a29b211df97