[SDL] [patch] DirectFB driver: MGA CRTC2 support

[Thomas Jarosch]

> > I've never used DirectFB, but the patch looks sane.
>
> One thing came to my mind during breakfast this morning:
> Isn't the output of the second head in DirectFB_FlipHWSurface
> one frame behind? I first flip the "offscreen" memory and
> then copy it. Shouldn't I copy it first and the flip it?

Ok, I wrote a test program and the code works the way it is.
-> First flip, then copy

Attached is the "final" version of the patch. I've fixed the comments, 
#ifdefed the printfs() and changed the indent of my code.
Should be ready for CVS :-)

Thomas
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