git version 2.4.0
Removing ffbuild/config.log
From https://git.ffmpeg.org/ffmpeg
 * branch            master     -> FETCH_HEAD
HEAD is now at a76eae2 avfilter/Makefile: fix build with Vulkan and runtime GLSL compilation
a76eae2765818cda5d45975eb5cb109c6e5f111e