git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
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HEAD is now at a2b47cc avcodec/{png,mov}enc: use EOTF gamma approximation for gAMA chunk
a2b47ccfbf7fe68de9405e4a113ee4c2f05f1fc3