Need to set DLSCL_ADMINISTRATIVE coop level in directfb driver, or YUV overlay

 creation will fail in newer DirectFB versions.

   Fixes Bugzilla #394.

--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%402277

src/video/directfb/SDL_DirectFB_yuv.c

@@ -118,6 +118,15 @@ static DFBResult CreateYUVSurface(_THIS, struct private_yuvhwdata *hwdata,
       break;
     }
 
+  /* Need to set coop level or newer DirectFB versions will fail here. */
+  ret = layer->SetCooperativeLevel (layer, DLSCL_ADMINISTRATIVE);
+  if (ret)
+    {
+      SetDirectFBError("IDirectFBDisplayLayer::SetCooperativeLevel() failed", ret);
+      layer->Release (layer);
+      return ret;
+    }
+
   ret = layer->SetConfiguration (layer, &conf);
   if (ret)
     {