fix confugre to not default to using LTO on clang++6 since that fails on ubuntu for libcurl (not worth debugging why)
fix confugre to not default to using LTO on clang++6 since that fails on ubuntu for libcurl (not worth debugging why)

SophistSolutions/Stroika,SophistSolutions/Stroika,SophistSolutions/Stroika,SophistSolutions/Stroika,SophistSolutions/Stroika