Tom Yang 74ca07295f [lldb] improve dwo path in missing dwo error when relative (#69783) ...

When the debug info refers to a dwo with relative `DW_AT_comp_dir` and
`DW_AT_dwo_name`, we only print the `DW_AT_comp_dir` in our error
message if we can't find it. This often isn't very helpful, especially
when the `DW_AT_comp_dir` is ".":
```
(lldb) fr v
error: unable to locate .dwo debug file "." for skeleton DIE 0x000000000000003c
```

I'm updating the error message to include both `DW_AT_comp_dir` (if it
exists) and `DW_AT_dwo_name` when the `DW_AT_dwo_name` is relative. The
behavior when `DW_AT_dwo_name` is absolute should be the same.

2023-10-21 16:59:44 -07:00

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