Workaround for #3526 (h264 and direct rendering).

The bug is not specific to win32 (x11 has it too). I have to hardcode the
value for vlc 1.1 but will try to do something cleaner for vlc master.

include/vlc_config.h

@@ -153,7 +153,7 @@
 
 /* Video heap size - remember that a decompressed picture is big
  * (~1 Mbyte) before using huge values */
-#define VOUT_MAX_PICTURES              20
+#define VOUT_MAX_PICTURES              25
 
 /*
  * Time settings

src/video_output/video_output.c

@@ -109,10 +109,9 @@ static void DisplayTitleOnOSD( vout_thread_t *p_vout );
 
 /* Minimum number of direct pictures the video output will accept without
  * creating additional pictures in system memory */
-#ifdef OPTIMIZE_MEMORY
-#   define VOUT_MIN_DIRECT_PICTURES        (VOUT_MAX_PICTURES/2)
-#else
-#   define VOUT_MIN_DIRECT_PICTURES        (3*VOUT_MAX_PICTURES/4)
+#define VOUT_MIN_DIRECT_PICTURES 23
+#if VOUT_MIN_DIRECT_PICTURES > VOUT_MAX_PICTURES
+#   error "VOUT_MAX_PICTURES is incomatible with VOUT_MIN_DIRECT_PICTURES"
 #endif
 
 /*****************************************************************************