If OLD_SUB has regular data (add_size), it is covered by header_crc.
If OLD_SUB has regular data (add_size), it is covered by header_crc.

As we now occasionally read regular data, stop using
relative seeks when moving around.




markokr/rarfile,BackupTheBerlios/rarfile,markokr/rarfile,BackupTheBerlios/rarfile,plajjan/rarfile