* Created setter and getter functions.
* Adjusted all calls to use these functions.
* Converted mapflags to C++ map container.
* Converted drop_list to vector.
* Converted skill_damage ERS into vector and increased limit from UINT8 to UINT16.
* Cleaned up several functions to be more dynamic to reduce redundancy that was all over the place.
* Renamed nosumstarmiracle to nosunmoonstarmiracle.
* Adjusted skill_damage mapflag to use proper defined constants.
* Refactored map index into a vector.
Thanks to @Lemongrass3110 for a lot of help and @secretdataz!
- 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
