git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at a4d40f8 avformat/matroskadec: Check that end_time_ns >= start_time_ns
a4d40f853a2b963155bd6b4fb2623dcda893ef4f