Allow building of ddraw.dll / ddrawex.dll on MingW

[Alexandre Julliard]

Stefan Dösinger <stefan at codeweavers.com> writes:

> I don't think mingw's dxguid is outdated. IDirectDraw3 is an internet-explorer 
> internal interface, so I don't think any windows library exports that GUID 
> publically. I am not sure how to deal with it.

If it's not in the Windows libdxguid it shouldn't be in the Wine
one. The GUID can be declared in the C files that need it.

-- 
Alexandre Julliard
julliard at winehq.org