git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 9dd0fe0 avcodec/allcodecs: Move AV_CODEC_PROP_ENHANCEMENT check to test tool
9dd0fe0225c2c3406ca49430a74c8660b1713889