* Initial release of `nocostume` map flag to follow official `DISABLE_COSTUMEITEM` map property.
* Added map flag `nocostume`, current confirmed maps are TE Castles and Guild Dungeons.
* Fixed#815.
* Stores `setlook` values so it won't be removed on `nocostume` mapflag
Signed-off-by: Cydh Ramdh <cydh@pservero.com>