* Follow up 7cd82d0
-- Changed itemdb_array (array) to itemdb (DBMap)
-- Removed itemdb_other (DBMap)
-- Changed MAX_ITEMDB to MAX_ITEMID, by default limit is USHRT_MAX (65,535)
-- Changed item_drop_ratio_db (array) to mob_item_drop_ratio (DBMap)
-- Now all item datas stored in itemdb (DBMap) and mob item ratio datas in mob_item_drop_ratio (DBMap)

PS: I just realized that db/import/mob_item_ratio.txt doesn't work, because it loaded after mob_db.txt (another thing to do)
Signed-off-by: Cydh Ramdh <house.bad@gmail.com>