Rollbacked clif.c from the changes of r15828, r15830 and r15833 (they were causing quite a few bugs and protimus wasn't available to fix). special thanks to keikun.
git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@15849 54d463be-8e91-2dee-dedb-b68131a5f0ec