add boxed vector3 to lua
add matatable functions to LuaStack
add boxed version of Quaternion and Matrix4x4 to Lua
add getter/setter to LuaVector3Box
rewrite LuaSystem::init() with LuaStack
update LuaEnvironment
update make files
fix typo
remove Vector3::negate from Lua public interface
	Merge branch 'master' of https://github.com/taylor001/crown