git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 3f2b452 avcodec/opus/silk: don't assume stereo when calling silk_decode_frame()
3f2b452a22597e34883bd913d0f11a8087090717