[cairo] Pixman refactoring

[Soeren Sandmann]

Hi Jeff,

> > * Reformat with consistent naming and coding style (basically the one
> >   described in cairo/CODING_STYLE with a few changes).
> 
> I prefer having the braces on the same line as the 'while ()' but you're
> the maintainer and it's not a huge deal.

This is actually one of the changes from the cairo document: braces go
on their own line; in cairo both styles are allowed. But yeah, not a
big deal, so I'm just picking the one I prefer.


Soren