[llvm] [XCOFF][obj2yaml] support parsing auxiliary symbols for XCOFF (PR #70642)

[James Henderson via llvm-commits]

https://github.com/jh7370 commented:

@EsmeYi, please don't resolve comments that I've made, as I need to look back through them to check that they've been addressed as I expected. See https://discourse.llvm.org/t/rfc-github-pr-resolve-conversation-button/73178.

Nothing new to add at this point. I'll take a further look through once Digger is basically happy.

https://github.com/llvm/llvm-project/pull/70642