* qatar/release/0.8: (154 commits)
  Update Changelog for the 0.8.1 Release
  dca: include libavutil/mathematics.h for possibly missing M_SQRT1_2
  dca: don't use av_clip_uintp2().
  snow: check reference frame indices.
  snow: reject unsupported chroma shifts.
  xa_adpcm: limit filter to prevent xa_adpcm_table[] array bounds overruns.
  h264: increase reference poc list from 16 to 32.
  h264: stricter reference limit enforcement.
  h264: improve parsing of broken AVC SPS
  Replace computations of remaining bits with calls to get_bits_left().
  png: convert to bytestream2 API.
  roqvideo: convert to bytestream2 API.
  smc: port to bytestream2 API.
  tgq: convert to bytestream2 API.
  algmm: convert to bytestream2 API.
  jvdec: unbreak video decoding
  h264: Fix invalid interlaced/progressive MB combinations for direct mode prediction.
  libx264: add 'stats' private option for setting 2pass stats filename.
  libx264: fix help text for slice...