git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 91512f0 fftools/cmdutils: Rename file_read to read_file_to_string to avoid symbol collision with NuttX
91512f08567eefd31e80e8bc70ca6d014a5fbaa5