Hooray for OpenGL!

I finally found some time today and converted LuaGame to using OpenGL as the backend. This has a number of advantages:

  1. Both normal blits and animation frames now support rotation and scaling
  2. It's significantly faster
  3. The dependence upon SDL_gfx has been removed.
  4. It's actually getting close to a release (once I do more documentaiton)

Look forward to seeing an alpha release in the next couple days.