git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 6ba6db4 libavutil: Add functions for SMPTE-2094-50 HDR metadata
6ba6db4f195c15c7b4fbca7ec29a5d18a390aee1