git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at 489a383 swscale/vulkan: implement SWS_OP_PACK/SWS_OP_UNPACK
489a3834d27c9add73d15e4c027856f6a39276a4