All these checks are done during the capability checks which are
performed under the resource type checks.

It is legal to pass Usage=0 to CheckDeviceFormat and in both this case
and in the case a format isn't available UsageCaps would be 0 and a
format would be reported available.

We assume it has the same capabilities as VOLUMETEXTURE. MSDN is very
vague on this topic. Intel/Nvidia/ATI drivers seem to offer nearly the
same caps on both, so do that too.

wined3d: When volume textures aren't around (GL_EXT_texture3D not supported) return WINED3DERR_NOTAVAILABLE.

wined3d: We don't offer index/vertex buffer caps. Neither do Windows drivers (at least Nvidia, Ati and Intel).

Also replace numeric ids by appropriate constants.