* Script updates.
- Added Renewal features to PVP script and removed duplicate warps.
- Added "Acolyte Warpers" script (Keiki and Isalei), disabled since it may be an event script.
- Added "Mergician" NPC, but it currently doesn't function and is disabled.
- Moved "Stone Change" script from merchants/ to other/.
- Follow-up 8acde7e: further bug fixes.

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