*Added Skill Damage Adjustment!
- Disabled by default on src/config/core.h. Uncomment '#define ADJUST_SKILL_DAMAGE' to enable this skill damage adjustment
- Added skill_damage_db.txt (thank Lilith for 'Manage Skill Damage')
- Added new mapflag: 'skill_damage'. Please read 'doc/mapflags.txt' for more details
*Fixed bugreport:8029 (thank exneval for testing and reporting) (Akinari)
*Follow-up 647f99f (Akinari)
*Follow-up 15074d8: optimized item_isNoEquip check parts
*and some mirror changes