* Follow Up: r17080
   1. Removed an unnecessary update call.
   2. Implemented interreg table at main.sql.
   
* Follow Up: r17077, r17072, r17065
   1. Fixed bugreport:7078, removed unnecessary checks.

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@17081 54d463be-8e91-2dee-dedb-b68131a5f0ec