Recommended update for llvm
This update for llvm fixes the following issues:
- Add ExcludeArch mirroring the ones in llvm5. (bsc#1101598)
This update was imported from the SUSE:SLE-15:Update update project.
- Submitted by Michal Srb (michalsrb)
Fixed bugs
bnc#1101598
llvm doesn't build on s390