These apis provide functionality for converting pixel data
into formats suitable for the framebuffer and for writing the
data to the framebuffer. Eventually, we'll probably want to
use Soeren's pixman-turned-to-a-library library to do the pixel
conversion.
The README file right now is just a copy of the Readme.txt
included in Kristian's old work on graphical boot. This change
adds a disclaimer to that effect and link to the wiki page where
the future design is getting worked out.
