Update the luajit build scripts

* Remove commented out code
* Add input args for product name and destination to tie into xcode
target
Update libmoai Xcode project w/luajit targets

* Add LuaJIT targets for iOS and OSX
* Remove old luajit compile scripts in libmoai-ios and libmoai-osx
Update iOS Project with luajit target

* Add moai-luajit for building with jit
* Use existing moai target for building without jit
* Adding scheme for JIT
Update OSX Project with LuaJIT target

* Add moai-luajit target for JIT builds
* Use existing moai target for non JIT builds
* Add scheme for JIT builds.