Merge commit '6877537f'

* commit '6877537f':
  hmac: add missing version bump and APIChanges entry

Conflicts:
	libavutil/version.h

version.h is not changed as the code has been added 2 years ago in FFmpeg

See: 82ef6701Merged-by: Michael Niedermayer <michael@niedermayer.cc>

doc/APIchanges

@@ -709,6 +709,9 @@ API changes, most recent first:
    av_ripemd_update()
    av_ripemd_final()
 
+2013-06-10 - 82ef670 - lavu 52.35.101 - hmac.h
+  Add AV_HMAC_SHA224, AV_HMAC_SHA256, AV_HMAC_SHA384, AV_HMAC_SHA512
+
 2013-06-04 - 30b491f / fc962d4 - lavu 52.35.100 / 52.13.0 - mem.h
   Add av_realloc_array and av_reallocp_array