[llvm] Aggregate errors from llvm-dwarfutil --verify (PR #79648)

[Jonas Devlieghere via llvm-commits]

JDevlieghere wrote:

> dsymutil is a DWARF processor. dwarfdump -verify only does validation. 

Ah, I think there's some confusion here. Your PR descriptions says `llvm-dwarfutil` but based on your reply you were talking about `llvm-dwarfdump`. The former is the equivalent of `dsymutil` for ELF and I thought it was using the DWARF verifier as a library (like `dsymutil` does) and all my comments were related to that. However you're trying to improve the output of `llvm-dwarfdump` (which is great!) so that explains why it wasn't clear to me how that would work :-) 

https://github.com/llvm/llvm-project/pull/79648