git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 976e18f swscale/x86: use correct HOSTCC_E flag instead of CC_E
976e18fdef8bcd0602b6b94bb157a82a3eb9a1a6