* qatar/master:
libmp3lame: add missing layout terminator
avconv: multithreaded demuxing.
Bump lavu minor and add an APIChanges entry for audioconvert functions.
audioconvert: add a function for extracting the channel with the given index
audioconvert: add a function for getting the name of a single channel.
audioconvert: add a function for getting channel's index in layout
audioconvert: use av_popcount64 in av_get_channel_layout_nb_channels
vf_libopencv: add missing headers.
iac: add missing dependency
Conflicts:
configure
doc/APIchanges
ffmpeg.c
libavcodec/libmp3lame.c
libavutil/avutil.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>