Finished re-write of OptimalSizeForTexture().  Removed first version code in OptimalSizeForTexture().
Fixed semantic error that caused infinite loop bug in OptimalSizeForTexture().
Added Lua methods optimalSize() and renderTexture() to MOAIFreeTypeFont.
Added helper methods OptimalSize() and RenderTexture() to MOAIFreeTypeFont.
Implemented new Lua methods and helper method OptimalSize() in MOAIFreeTypeFont.
Added a header so it would compile.  Should probably remove this.