[llvm] [llvm-objcopy] Add support of symbol modification flags for MachO (PR #120895)

[Richard Dzenis via llvm-commits]

RIscRIpt wrote:

> Please update the docs (llvm/docs/CommandGuide/llvm-objcopy.rst) to move the relevant options from the ELF-specific section to the generic options section.

Done. I've also added a short notes to each option that it is supported only for ELF and MachO. Please check it.

Additionally, I've updated llvm/ReleaseNotes.md

> Am I right in thinking that this automatically supports the file-based inputs like --globalize-symbols too, because this bit is in the generic code? If so, please update the tests to cover them and the PR description to mention this.

That's right. I've updated PR description, and tests.

https://github.com/llvm/llvm-project/pull/120895