Merge commit '7751e4693dd10ec98c20fbd9887233b575034272'

* commit '7751e4693dd10ec98c20fbd9887233b575034272':
  ogg: check that the expected number of headers had been parsed
  libx264: change default to closed gop to match x264cli
  Use avcodec_free_frame() to free AVFrames.
  lavf: use a malloced AVFrame in try_decode_frame().
  lavc: add avcodec_free_frame().
  lavc: ensure extended_data is set properly on decoding
  lavc: initialize AVFrame.extended_data in avcodec_get_frame_defaults()
  lavc: use av_mallocz to allocate AVFrames.
  lavc: rename the argument of avcodec_alloc_frame/get_frame_defaults

Conflicts:
	doc/APIchanges
	doc/examples/decoding_encoding.c
	libavcodec/utils.c
	libavcodec/version.h
	libavfilter/src_movie.c
	libavformat/oggdec.c
	libavformat/oggdec.h
	libavformat/oggparsetheora.c
	libavformat/utils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

doc/examples/muxing.c

@@ -163,6 +163,7 @@ static void write_audio_frame(AVFormatContext *oc, AVStream *st)
         fprintf(stderr, "Error while writing audio frame\n");
         exit(1);
     }
+    avcodec_free_frame(&frame);
 }
 
 static void close_audio(AVFormatContext *oc, AVStream *st)