gtk gui conf: disable rewind conf when dynarec & display memory usage

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@89836 e17a0e51-4ae3-4d35-97c3-1a29b211df97
COTS & HLE BIOS & no memcard: enable password.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@89839 e17a0e51-4ae3-4d35-97c3-1a29b211df97
gtk: fixed save state picture viewing (thx Tapek)

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@89840 e17a0e51-4ae3-4d35-97c3-1a29b211df97