WineD3D: BltFast/BltOverride color keying

[Roderick Colenbrander]

Hi,

This patch adds color keying support to *_BltOverride. It required changes to *_BltFast to properly pass 'BLT' flags instead of 'BLTFAST' to *_BltOverride. Next it adds SRC/DEST color keying to *_BltOverride.

Further to get color keying working at all it fixed a small error in LoadTexture which I paste here because it is hard to spot in the patch. Right now a check in there looks like:
(This->Flags & SFLAG_GLCKEY && !(This->CKeyFlags & DDSD_CKSRCBLT)) ||
/* Reload: vice versa  OR */
(!(This->Flags & SFLAG_GLCKEY) && !This->CKeyFlags & DDSD_CKSRCBLT) ||

The third '!' was removed as indicated by the comment this fixes color keying. Next to this some gcc warning was silenced by adding some more braces.

Regards,
Roderick Colenbrander

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