[sugar] Cairo tile engine, and accessing 565 buffers from cairo and C

[Antoine van Gelder]

Dan Williams wrote:
> The change to the LX and 256MB of RAM will help here, since the GPU on
> the LX is more powerful and has more hardware accelerated conversion
> operations.  We'll need to do some tests, but we anticipate switching
> the depth to 24bpp instead of 16.


"loud cheers and whistling from the gallery*

  - a