[clang] [llvm] [MC,llvm-readobj,yaml2obj] Support CREL relocation format (PR #91280)

[Peter Smith via cfe-commits]

https://github.com/smithp35 commented:

I've finished going through the patches now. Apologies for the delay.

I don't think I have too many substantive comments. Overall this looks like it implements the specification as described in the confluence page.

https://github.com/llvm/llvm-project/pull/91280