[llvm] [llvm-objdump] print out xcoff file header and load section header for xcoff object file with option private-headers (PR #96350)

[James Henderson via llvm-commits]

https://github.com/jh7370 commented:

Please use correct sentence grammar in your PR description, just like in comments (so capital letter and full stop at end).

Given that there's a GNU objdump implementation of this, does this PR attempt to match that existing behaviour?

https://github.com/llvm/llvm-project/pull/96350