[clang] Support target names with dots in more utilities (PR #65812)

[Dan McGregor via cfe-commits]

dankm wrote:

Sounds good. Everything I want is in the pull request, I'm going to create a new pull request to update some tests as we discussed above. I'll update the description to be a bit more clear.

Thanks for all help.

https://github.com/llvm/llvm-project/pull/65812