- Removed bonus bAddDamageByClass since it is not needed, and implemented bAddDefClass which can be used for the same (but previously was doing nothing).
- Cleaned up the weapon_data structure to use a sub-structure to hold the add_dmg information.
- Cleaned up some of the add dmg/def bonuses so the 'count' variable is not needed anymore.
git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@11121 54d463be-8e91-2dee-dedb-b68131a5f0ec