git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 23592f9 swscale/output: fix integer overflow in yuv2rgba64_full_1_c_template()
23592f942db93776dab65a5e92400bb2f037390e