[XCode Project][Issue #2]: Get rid of the OEImportItem and OEROMImporter
[OEPrefLibraryController][Issue #2]: Remove two unused variables
[OEDBSystem][Issue #2]: Remove an unused variable
[MainMenu][Issue #31]: Add a new option to create an empty bundle
[BarrelWineLauncher]: Post 1.7.0 engines no longer have the stuck process bug, so don't kill for them