- 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>
Fix -WShadow definition warning
Cleanup some leftover
Bug Fixes
* Fixed Concentration ending when Frenzy is used. (bugreport:8942)
* Fixed Hells Plant hitting Ghost element enemies. (bugreport:8799)
* Forced guild notice changes to save immediately. (bugreport:8961)
* Fixed Cart Tornado damage formula. (bugreport:9065)
* Adjust Amistr's Castling to now switch to any target type. Still needs skill switching support. (bugreport:1784)
* Removed hard coded 1 second skill duration reduction for Spore Explosion.
* Fixed the party window not displaying the correct map name when in an instance. (bugreport:7949)
* Fixed hatching a pet causing client disconnections. (bugreport:9059) (Hercules 533ff4f)
* Updated Kagerou/Oboro skill cast times. (bugreport:9035)
* Removed deprecated negative nameid value for getitem/getitem2.
* Renamed incuvate to incubate throughout source and SQL.
* Added skill ID to the error display for battle_calc_attack to help resolve issues. (bugreport:8876)
* Cleaned and corrected some Sorcerer Elemental skills. (bugreport:9058)
* Cleaned up some more compile warnings.
Follow up e7b654a. Fixed changes for bugreport:9062 wasn't staged there

Signed-off-by: Cydh Ramdh <house.bad@gmail.com>
* Added setting for resetting reuse skill delay homunculus, 0x80 (Disabled by default).
* Follow up 22dea1f

PS:
Hmm, as "suggested" by Darkpurple at bugreport:8989, idk it's bug or it should be like that. And, I added the setting option for a whole Homunculus (not for spesific skill/homun id yet), just like "reset reuse skill delay when vaporized" does.

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