Re: [libgcc8] compile failure on i386 on 10.6 Snow

[Ken Cunningham]

defaulting systems to clang-8.0 for all builds will be pretty interesting, and 
likely will trigger quite a few build errors as it's so strict and defaults to 
c++17...but certainly will be useful in the end to help pave the way for newer 
xcode clangs to follow...