git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 7b5b299 avutil/x86/cpu: Remove 3dnow flags, macros
7b5b29910ad39e8666f41ccc64cfb4064f4e08f6