Sanitizers update: The LLVM Thread Sanitizer has been ported to NetBSD

Hello,

I've finished the LLVM TSan porting:

https://blog.netbsd.org/tnf/entry/the_llvm_thread_sanitizer_has

Next goal:
Finish MSan followed by the switch to LLDB/NetBSD corrections.

Have you been able to run lldb under any sanitizers yet?

Yes, I can run LLDB under at least ASan and TSan.

Pity, the backend part (lldb-server) broke after refactoring the code in
recent months. I'm observing an early NULL pointer deference from NetBSD
Process Plugin - this is unrelated to the previous stability bugs that
inspired me to get the sanitizers aboard.

I will be back to LLDB once I will finish MSan.