git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 934e1c2 APIchanges: Add entry for AV_PKT_DATA_RTCP_SR
934e1c23b0564402fb1f8e3e4c4a377d9c44f215