git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 9c6c4f3 avcodec/libaomenc: properly clean up image metadata
9c6c4f3d476d7a8d423ec3b954254c6a67ebc792