git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at a43ea8b avfilter/af_pan: fix sscanf() return value checks in parse_channel_name
a43ea8bff79f23257313fc3e1a884aea9b7633ae