doc/APIchanges: Fill in some missing values

also fix some inconsistencies

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

doc/APIchanges

@@ -15,22 +15,22 @@ libavutil:     2015-08-28
 
 API changes, most recent first:
 
-2016-xx-xx - xxxxxxx - lavf 57.25.0 - avformat.h
+2016-02-10 - bc9a596 / 9f61abc - lavf 57.25.0 - avformat.h
   Add AVFormatContext.opaque, io_open and io_close, allowing custom IO
 
-2016-02-01 - xxxxxxx - lavf 57.24.100
+2016-02-01 - 1dba837 - lavf 57.24.100
   Add protocol_whitelist to AVFormatContext, AVIOContext
 
-2016-01-31 - xxxxxxx - lavu 55.17.100
+2016-01-31 - 66e9d2f - lavu 55.17.100
   Add AV_FRAME_DATA_GOP_TIMECODE for exporting MPEG1/2 GOP timecodes.
 
-2016-01-01 - xxxxxxx - lavc 57.21.100 / 57.12.0 - avcodec.h
+2016-01-01 - 5e8b053 / 2c68113 - lavc 57.21.100 / 57.12.0 - avcodec.h
   Add AVCodecDescriptor.profiles and avcodec_profile_name().
 
-2015-12-28 - xxxxxxx - lavf 57.21.100 - avformat.h
+2015-12-28 - 1f9139b - lavf 57.21.100 - avformat.h
   Add automatic bitstream filtering; add av_apply_bitstream_filters()
 
-2015-12-22 - xxxxxxx - lavfi 6.21.101 - avfilter.h
+2015-12-22 - 39a09e9 - lavfi 6.21.101 - avfilter.h
   Deprecate avfilter_link_set_closed().
   Applications are not supposed to mess with links,
   they should close the sinks.
@@ -42,22 +42,22 @@ API changes, most recent first:
   xxxxxxx - Add a new public header dirac.h containing
             av_dirac_parse_sequence_header()
 
-2015-12-11 - xxxxxxx - lavf 57.20.100 - avformat.h
+2015-12-11 - 676a93f - lavf 57.20.100 - avformat.h
   Add av_program_add_stream_index()
 
-2015-11-29 - xxxxxxx - lavc 57.16.101 - avcodec.h
+2015-11-29 - 93fb4a4 - lavc 57.16.101 - avcodec.h
   Deprecate rtp_callback without replacement, i.e. it won't be possible to
   get image slices before the full frame is encoded any more. The libavformat
   rtpenc muxer can still be used for RFC-2190 packetization.
 
-2015-11-xx - xxxxxxx - lavc 57.16.0 - avcodec.h
+2015-11-22 - fe20e34 - lavc 57.16.100 - avcodec.h
   Add AV_PKT_DATA_FALLBACK_TRACK for making fallback associations between
   streams.
 
-2015-11-xx - xxxxxxx - lavf 57.19.100 - avformat.h
+2015-11-22 - ad317c9 - lavf 57.19.100 - avformat.h
   Add av_stream_new_side_data().
 
-2015-11-xx - xxxxxxx - lavu 55.8.100 - xtea.h
+2015-11-22 - e12f403 - lavu 55.8.100 - xtea.h
     Add av_xtea_le_init and av_xtea_le_crypt
 
 2015-11-18 - lavu 55.7.100 - mem.h
@@ -71,27 +71,27 @@ API changes, most recent first:
   xxxxxx - Add av_packet_alloc(), av_packet_clone(), av_packet_free().
            They match the AVFrame functions with the same name.
 
-2015-10-27 - xxxxxxx - lavu 55.5.100 - cpu.h
+2015-10-27 - 1e477a9 - lavu 55.5.100 - cpu.h
   Add AV_CPU_FLAG_AESNI.
 
-2015-10-22 - xxxxxxx - lavc 57.9.100 / lavc 57.5.0 - avcodec.h
+2015-10-22 - ee573b4 / a17a766 - lavc 57.9.100 / 57.5.0 - avcodec.h
   Add data and linesize array to AVSubtitleRect, to be used instead of
   the ones from the embedded AVPicture.
 
-2015-10-22 - xxxxxxx - lavc 57.8.100 / lavc 57.0.0 - qsv.h
+2015-10-22 - 866a417 / dc923bc - lavc 57.8.100 / 57.0.0 - qsv.h
   Add an API for allocating opaque surfaces.
 
-2015-10-15 - xxxxxxx - lavf 57.4.100
+2015-10-15 - 2c2d162 - lavf 57.4.100
   Remove the latm demuxer that was a duplicate of the loas demuxer.
 
-2015-10-14 - xxxxxxx - lavu 55.4.100 / lavu 55.2.0 - dict.h
+2015-10-14 - b994788 / 11c5f43 - lavu 55.4.100 / 55.2.0 - dict.h
   Change return type of av_dict_copy() from void to int, so that a proper
   error code can be reported.
 
-2015-09-29 - b01891a / 948f3c1 - lavc 57.3.100 / lavc 57.2.0 - avcodec.h
+2015-09-29 - b01891a / 948f3c1 - lavc 57.3.100 / 57.2.0 - avcodec.h
   Change type of AVPacket.duration from int to int64_t.
 
-2015-09-17 - 7c46f24 / e3d4784 - lavc 57.3.100 / lavc 57.2.0 - d3d11va.h
+2015-09-17 - 7c46f24 / e3d4784 - lavc 57.3.100 / 57.2.0 - d3d11va.h
   Add av_d3d11va_alloc_context(). This function must from now on be used for
   allocating AVD3D11VAContext.
 
@@ -107,7 +107,7 @@ API changes, most recent first:
   bit_rate/rc_max_rate/rc_min_rate were changed to 64bit, make sure you update
   any printf() or other type sensitive code
 
-2015-09-07 - lavu 55.0.100 / lavu 55.0.0
+2015-09-07 - lavu 55.0.100 / 55.0.0
   c734b34 / b8b5d82 - Change type of AVPixFmtDescriptor.flags from uint8_t to uint64_t.
   f53569a / 6b3ef7f - Change type of AVComponentDescriptor fields from uint16_t to int
             and drop bit packing.