[Customdrawn] New fast bitmap copying

[Felipe Monteiro de Carvalho]

And the speed increases don't stop =) Rev 36580 made a massive
improvement over rectangle filling when filling an entire object. The
fullscreen X11 form drawing went from 95ms to 33ms to me.

I also activated the new fast image copying by default.

I could feel quite a lot the speed implement of the rectangle feeling
in Android.

-- 
Felipe Monteiro de Carvalho