piglit/xts5 mashup

[Dave Airlie]

>
> I've stuck my initial piglit changes here:
> http://cgit.freedesktop.org/~airlied/piglit/log/?h=xts5-wrapper
>

I've updated it with a few more fixes, and cleaned it up a bit, it also
run tests in parallel now, though I'm not 100% sure that is the best plan!

It no longer needs the patch to xts, it can work the stuff out from git.

I've posted results from an F18 Xephyr server here:
http://people.freedesktop.org/~airlied/piglit/x11/

Dave.