I'm not sure if Maker is the best name (Developer? Publisher?
Company? Copyright?) but I went with it because it's
what the game properties window uses. For the sake of
backwards compatibility, the INI option wasn't renamed.
Renamed various commands to refer to ISO instead of GCM for consistency,
as the commands are used for both Wii and GameCube files.
CompressGCM --> CompressISO
DeleteGCM --> DeleteISO
MultiCompressGCM --> MultiCompressISO
MultiDecompressGCM --> MultiDecompressISO
SetDefaultGCM --> SetDefaultISO
Fixed COMPRESSISO
Fixed missing "COMPRESSISO"
Fixed more COMPRESSISO
Final fix for COMPRESSISO