git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at c591ddd avformat/movenc: don't write a 'chan' atom with an incorrect channel bitmap or description.
c591ddd453c77e2387d1c67d640d9e9b96ed70f8