Log Message:
Update to 2.4:

25/03/2005  *** v2.4 ***

- Fixed another crash with datutil -X and 'forcemerging full'.
- Changed the delimited format to use \N for NULLs.
- Changed the delimited format so that all types are 'game_*'.
- Changed the delimited format so that games include 'runnable'.
- Added save support for a DISK section in the RomCenter format.
- Added several aliases for the output formats (see DatUtil docs).