d3dx9: Implement the different dlls

[Maciej Kowalczyk]

Hi,
As it was in David Adam's patch case, here also you are forwarding  
d3dx8.D3DXVec3Normalize as D3DXVec2Normalize.
I think it's a typo and strikes me so much because it's a first line of  
the specfile.
I'm new to Wine, so please correct me if I'm wrong.

Maciej