git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 6177af5 avcodec/x86/lossless_videodsp: Avoid unnecessary reg push,pop
6177af5acca3c9c2efefa4e94a561d6776ae1dc7