git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 2a16890 avcodec/x86/vp9mc.asm: Replace MMX with SSE2
2a168907d36e7fbbb782b06d527c20ddefc1fccd