git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at a48e31e avcodec/x86/pngdsp.asm: replace MMX with SSE2
a48e31e501b950babcf7a47498ecf9e4e16cd7de