ffmpeg source update for sep 09

source/patched-ffmpeg-mt/libavformat/metadata.c

 /*
  * copyright (c) 2009 Michael Niedermayer
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
@@ skipping 68 matching lines @@
         m->count++;
     }
     if(!m->count) {
         av_free(m->elems);
         av_freep(pm);
     }
 
     return 0;
 }
 
-#if LIBAVFORMAT_VERSION_MAJOR == 52
+#if FF_API_OLD_METADATA
 int av_metadata_set(AVMetadata **pm, const char *key, const char *value)
 {
     return av_metadata_set2(pm, key, value, 0);
 }
 #endif
 
 void av_metadata_free(AVMetadata **pm)
 {
     AVMetadata *m= *pm;
 
@@ skipping 45 matching lines @@
 {
     int i;
     metadata_conv(&ctx->metadata, d_conv, s_conv);
     for (i=0; i<ctx->nb_streams ; i++)
         metadata_conv(&ctx->streams [i]->metadata, d_conv, s_conv);
     for (i=0; i<ctx->nb_chapters; i++)
         metadata_conv(&ctx->chapters[i]->metadata, d_conv, s_conv);
     for (i=0; i<ctx->nb_programs; i++)
         metadata_conv(&ctx->programs[i]->metadata, d_conv, s_conv);
 }