lavf: rename meta.h->ffmeta.h for consistency.

Originally committed as revision 26211 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/ffmetadec.c

@@ -20,7 +20,7 @@
  */
 
 #include "avformat.h"
-#include "meta.h"
+#include "ffmeta.h"
 
 static int probe(AVProbeData *p)
 {

libavformat/ffmetaenc.c

@@ -20,7 +20,7 @@
  */
 
 #include "avformat.h"
-#include "meta.h"
+#include "ffmeta.h"
 
 
 static void write_escape_str(ByteIOContext *s, const uint8_t *str)