git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 8aa6df6 avformat/whip: replace AV_OPT_FLAG_DECODING_PARAM to ENCODING
8aa6df663e76cb1231c389037006fdf3451551c8