git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
 * [new tag]         n7.1.5     -> n7.1.5
HEAD is now at b3689e7 swscale/uops: simplify permute naming scheme
b3689e792fdbaaac690ffb98e03dc75ca56483a6