- Follow up a8a4425 (bugreport:9062)
- Added check for item group ID usage on item bonus
- Moved this '(sd->class_&MAPID_UPPERMASK) == MAPID_TAEKWON && sd->status.base_level >= battle_config.taekwon_ranker_min_lv && pc_famerank(sd->status.char_id, MAPID_TAEKWON)' to a macro 'pc_is_taekwon_ranker(sd)'

Signed-off-by: Cydh Ramdh <house.bad@gmail.com>