[cairo] bitmasks branch

[Soeren Sandmann]

Hi,

The bitmasks branch here:

        http://cgit.freedesktop.org/~sandmann/pixman/log/?h=bitmasks

contains the initial reorganization in prepration for the full flags
branch. Specifically, it adds the flag fields to the fast path tables,
and it changes the fast path checks to be based on flags.

I kept finding subtle bugs in it, but now I haven't found any for a
while. Please take a look and see if you can spot any.


Thanks,
Soren