wined3d: Introduce quirk for proper RGBA16 support.

[Dan Kegel]

On Fri, Jul 8, 2011 at 10:02 PM, Dan Kegel <dank at kegel.com> wrote:
> It seems to work... but in Mass Effect 2 Demo with the patch,
> the initial cinematics (where Shepard is trying to put out
> the fire, and you're prompted to answer "There's no time to argue",
> are very jerky, and CPU usage is very high.
> I didn't have that problem without the patch.

Might have been my system was burping; it's fine on a second run through.

Thanks!
- Dan