OpenBSD/amd64 6.4 release
prepare kernel for lld linker
cvs vendor branch checkout
use lld as default linker
clang with final lld fixes
clang turns on retpoline by default
clang builds itself without retpoline
clang update LLVM to 7.0.1
clang implement save function arguments
save function arguments for ddb traces
pfctl pf len ioctl get states
binutils for libLLVM
clang with libLLVM
clang no stack protector if retguard