Fixed using the video mode extension on older servers

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40101

src/video/x11/SDL_x11gamma.c

@@ -37,7 +37,7 @@ static char rcsid =
 static int X11_SetGammaNoLock(_THIS, float red, float green, float blue)
 {
 #ifdef XFREE86_VMGAMMA
-    if (use_vidmode >= 2) {
+    if (use_vidmode >= 200) {
         XF86VidModeGamma gamma;
         Bool succeeded;
 

src/video/x11/SDL_x11modes.c

@@ -271,7 +271,7 @@ int X11_GetVideoModes(_THIS)
         }
         XFree(modes);
 
-        use_vidmode = vm_major;
+        use_vidmode = vm_major * 100 + vm_minor;
         save_mode(this);
     }
 #endif /* XFREE86_VM */