git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at a16e674 swscale/tests/swscale: add -api parameter (supersedes -legacy parameter)
a16e674f7f01142bc8c7ee57169265e67f4e7cbd