[llvm] [LLVM][DWARF] Add compilation directory and dwo name to TU in dwo section (PR #74909)

[Alexander Yermolovich via llvm-commits]

ayermolo wrote:

> Works for me/at least worth using it to experiment, see if it works for lldb, etc.
> 
> Maybe a comment in the DwarfDebug source explaining what these attributes might be useful for?

I don't think LLDB has support yet for this, and tombstoning in linker yet.
I believe @clayborg was waiting until this is in trunk.

https://github.com/llvm/llvm-project/pull/74909