git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at b21f1b6 tests/swscale: don't pass fake object to av_opt_eval_*
b21f1b6482b412edc06b20b2f5807c039081ee3a