WineD3D: Make CreateCubeTexture fail when not supported

[Saulius Krasuckas]

* On Wed, 28 Mar 2007, Felix Nawothnig wrote:
> Not tested under Windows (does _anyone_ besides me have a Matrox? :) - 
> would be nice if someone with either an MGA or an really ancient GPU 
> could run the test on windows (if the pool=0 trace has an hr!=0 you got 
> one of those ancient cards :).

I have a PCI video card equipped with following chip:

MATROX MGA
Power Graphics
IS-STORM R2
9613EK003

Should I test it and which OS should it be done in: XP or ME?