Bug Fixes:
- 'hp_rate' and 'sp_rate' config aren't working. http://rathena.org/board/tracker/issue-8742-max-hpsp-battleconf-not-working/
- Mercenary DB that aren't being read properly whic also happens for Homunculus DB. http://rathena.org/board/tracker/issue-8761-mercenary-db-import-folder-issue/
- Fixed Elemental DBs that aren't being imported yet. (also changed to sv_readdb)

Rebellion Skill Updates:
- Some updates according to kRO updates on http://forums.irowiki.org/showpost.php?p=1364894&postcount=579, http://forums.irowiki.org/showpost.php?p=1388802&postcount=981, and http://forums.irowiki.org/showpost.php?p=1389627&postcount=1008
- Partial merge from idAthena.
- Using 0x107 as temporary marker on mini-map for Crimson Marker target.
- Some stuffs maybe still wrong, feel free to report/fix it.
- Thank people on those links, Ziu, and idAthena.

Misc changes:
- Changed some function names for homunculus.c/h with prefix hom_* and mercenary.c/h with prefix mercenary_*
- Change unnecessary 'int' return value tos 'void'

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