This field is required in order to distinguish between regional
versions where the game ID is the same but the save type differ,
such as the Castlevania games.
Also added more Japanese-specific game IDs and edited some descriptions.
simer suggested (and implemented) the use of ROM IDs instead
of titles: "I've also found that the header name in some cases
are too inprecise, for example "TOP GEAR RALLY" has EEPROM 4K
for the Japanese and European versions, but not for the American.
