git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 5554d9d avutil/eval: Store *prng_state / var only in root AVExpr
5554d9d555c4f92492d0b86827e0075a78eb0df3