git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at df5199c avformat/Makefile: fix error unresolved external symbol ff_dtls_protocol
df5199c63f497a1d462c3b46eeaf2a091c1155d3