Fixes & Additions

Added Combat & Condition metatables
Moved Combat/Condition/CombatArea storage from ScriptEnvironment to
LuaEnvironment, while doing this I fixed a memory leak when reloading
scripts using these classes.
These should not have been commited.
Merge pull request #159 from dalkon/master

Added Combat & Condition metatables
Moved Combat/Condition/CombatArea storage from ScriptEnvironment to
LuaEnvironment, while doing this I fixed a memory leak when reloading
scripts using these classes.