eval: include our headers after system headers

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@19612 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/eval.c

@@ -28,14 +28,14 @@
  * see http://joe.hotchkiss.com/programming/eval/eval.html
  */
 
-#include "avcodec.h"
-#include "eval.h"
-
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
 
+#include "avcodec.h"
+#include "eval.h"
+
 #ifndef NAN
   #define NAN 0.0/0.0
 #endif