lavc: deprecate avcodec_get_frame_defaults().

Also bump libavcodec micro and add an APIchanges entry saying that
av_frame_* should now be used instead of the lavc AVFrame functions.

doc/APIchanges

@@ -13,6 +13,11 @@ libavutil:     2012-10-22
 
 API changes, most recent first:
 
+2013-12-xx - xxxxxxx - lavc 55.28.1 - avcodec.h
+  av_frame_alloc(), av_frame_unref() and av_frame_free() now can and should be
+  used instead of avcodec_alloc_frame(), avcodec_get_frame_defaults() and
+  avcodec_free_frame() respectively. The latter three functions are deprecated.
+
 2013-11-xx - xxxxxxx- - lavu 52.20.0 - frame.h
   Add AV_FRAME_DATA_STEREO3D value to the AVFrameSideDataType enum and
   stereo3d.h API, that identify codec-independent stereo3d information.

libavcodec/avcodec.h

@@ -3103,16 +3103,17 @@ int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src);
  */
 attribute_deprecated
 AVFrame *avcodec_alloc_frame(void);
-#endif
 
 /**
  * Set the fields of the given AVFrame to default values.
  *
  * @param frame The AVFrame of which the fields should be set to default values.
+ *
+ * @deprecated use av_frame_unref()
  */
+attribute_deprecated
 void avcodec_get_frame_defaults(AVFrame *frame);
 
-#if FF_API_AVFRAME_LAVC
 /**
  * Free the frame and any dynamically allocated objects in it,
  * e.g. extended_data.

libavcodec/utils.c

@@ -801,6 +801,7 @@ enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const en
     return fmt[0];
 }
 
+#if FF_API_AVFRAME_LAVC
 void avcodec_get_frame_defaults(AVFrame *frame)
 {
     if (frame->extended_data != frame->data)
@@ -815,7 +816,6 @@ void avcodec_get_frame_defaults(AVFrame *frame)
     frame->extended_data       = frame->data;
 }
 
-#if FF_API_AVFRAME_LAVC
 AVFrame *avcodec_alloc_frame(void)
 {
     AVFrame *frame = av_mallocz(sizeof(AVFrame));

libavcodec/version.h

@@ -28,7 +28,7 @@
 
 #define LIBAVCODEC_VERSION_MAJOR 55
 #define LIBAVCODEC_VERSION_MINOR 28
-#define LIBAVCODEC_VERSION_MICRO  0
+#define LIBAVCODEC_VERSION_MICRO  1
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \