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

[via llvm-commits]

WenleiHe wrote:

Thanks for working on it -- this feels like a long missing feature. Perhaps one day `--only-aggregate-errors` would be the default behavior (unless higher verbosity is explicitly requested). 

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