WineD3D: shader cap fixes

[Roderick Colenbrander]

One last time an update to the patch. During some tests I noticed that the reported vertex shader version on my card was wrong. It appeared that next to extensions like 'GL_NV_vertex_program' and 'GL_NV_vertex_program2' there can be extensions like 'GL_NV_vertex_program2_option'. This didn't work correctly in the code so do 'max(previous_detected_version, newly_detected_version' to make sure that the version will never be lowered.

> Use this updated patch. I forgot to initialize some constants to zero and
> made the diff against a wrong file because of which some crucial changes
> were missed.
> 
> Roderick
> 
> 
> > Hi,
> > 
> > This patch adds most missing shader capabilities. Some capabilitise are
> > read from OpenGL but not everything is mappable to Direct3D in some
> cases an
> > extension from lets say Nvidia can be used but it is not really worth
> it.
> > If there's no OpenGL cap the minimum required values as required by the
> > shader specs are used.
> > 
> > Regards,
> > Roderick Colenbrander


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