removed strong ref from MOAILuaObject::OnRetain (). Also removed LockToRefCount in favor of creating explicit string refs to self as needed
cleaned up implementation of latches in MOAITask and MOAIHttpTaskBase
Merge pull request #769 from patrickmeehan/fix/lua-gc

Revisions to Moai Lua binding, memory management and garbage collection
Fix compilation error
Merge branch 'development' into squirrel