[cairo] Mac OS X support added

[Miguel de Icaza]

Hello,

    Just a small comment:

> > -#include <cairo-features.h>
> > +#if !TARGET_OS_MAC
> > +	#include <cairo-features.h>
> > +	#include <pixman.h>
> > +#else
> > +	#include <Cairo/cairo-features.h>
> > +	#include <Cairo/pixman.h>
> > +#endif
> > +

In some C compilers the above syntax is not allowed, the "#" sign should
be in the first column (the actual "include" word can still be indented
if you want), but older compilers on some platforms we are targeting
will barf on that.

Miguel.