[clang] [llvm] Add support for Windows Secure Hot-Patching (PR #138972)

[via cfe-commits]

sivadeilra wrote:

I've updated the PR so that the COFF debugging tests pass.  I had to run the hot-patching pass a little earlier, so that it ran before the CodeViewDebug pass.

https://github.com/llvm/llvm-project/pull/138972