git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 3f10a05 fftools/ffmpeg: fix read_key() always return 255 when there was no input
3f10a054dc8e5af5aeb9450e3bdea1ffcce91dd7