first set of new APIs + convert server to use them

[Aaron Plattner]

On 05/05/2012 01:49 AM, Dave Airlie wrote:
> This set of patches provides new APIs for converting scrn->screen and vice
> versa, and converts most of the low-hanging fruit in the X server to use
> them. Further changes are needed, but it would be good to get started,
> and we can start converting over a lot of the code in the drivers.
>
> The second set of patches adds new GlyphPicture accessors instead of directly
> accessing global arrays, it converts render/exa to use them.
>
> These are just new API and provide defines to allow servers to define
> fallback versions in a simple header file.

I know I'm contributing to the "W[here]TF are the reviewers?" problem. 
Sorry.

These four patches,
Reviewed-by: Aaron Plattner <aplattner at nvidia.com>

-- Aaron