Add FFMPEG_ prefix to all multiple inclusion guards.

Originally committed as revision 10765 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/mpeg4data.h

@@ -25,8 +25,8 @@
  * mpeg4 tables.
  */
 
-#ifndef AVCODEC_MPEG4DATA_H
-#define AVCODEC_MPEG4DATA_H
+#ifndef FFMPEG_MPEG4DATA_H
+#define FFMPEG_MPEG4DATA_H
 
 #include <stdint.h>
 #include "mpegvideo.h"
@@ -429,4 +429,4 @@ static const uint8_t mpeg4_dc_threshold[8]={
     99, 13, 15, 17, 19, 21, 23, 0
 };
 
-#endif // AVCODEC_MPEG4DATA_H
+#endif /* FFMPEG_MPEG4DATA_H */