Merge pull request #67 from cydh/master

* Follow up e2d2494
- Removed hardcodes SI_ for SC_ITEMSCRIPT
- Changed some item scripts that use SC_ITEMSCRIPT to sc_start2, added val2 as SI_
- Revert some hardcodes ITEMID_
* Changed spiritball limit to MAX_SPIRITBALL (Hercules partial merge)
* Updated .sql item_db files
Added UTF-8 BOM detection for NPC scripts. (Hercules 694d32a)

Signed-off-by: Euphy <euphy.raliel@rathena.org>