git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 1a7e802 avformat/demux: use io_close2 when closing avfromat
1a7e802c8f970e76807f08c3d3fb3513ae5a4882