Full Lua Integration

Have recently added LuaWindow object which allows Lua scripts that render to OpenGL using LuaGL (for example.) To make this fully effective need to be able to create a LuaWindow object from within Lua, and load glk. E.g. want to be able to write something like this in Lua:

require(luagl)
require(glk)

win = glk.CreateWindow( width, height, flags, frameBufferConfig )
function win:InitGL()
  gl.ClearColor(0,0,0,0)
end

win.Start()

-- etc