OS X: Force the size of the memory card images to 32 px.

git-svn-id: https://pcsxr.svn.codeplex.com/svn@91776 e17a0e51-4ae3-4d35-97c3-1a29b211df97
OS X: Match the command-line arguments with those of the Linux/UNIX version.
Quiet warnings about comments.

git-svn-id: https://pcsxr.svn.codeplex.com/svn@91777 e17a0e51-4ae3-4d35-97c3-1a29b211df97