[lld] [LLD] dtNeeded name should consistent with soNames (PR #72857)

[Fangrui Song via llvm-commits]

MaskRay wrote:

I suspect that you have an incorrect use case, but the case is not clearly described and I cannot verify.
This inconcistency what we will get when a shared object does not have `DT_SONAME` (https://maskray.me/blog/2020-11-15-explain-gnu-linker-options#sonamename)

FYI I place all needed files in a directory and run `cd dir; mkreproduce . > /tmp/rep.sh` to create `cat <<eof` and `echo` instructions that other people can easily reproduce. (e.g. https://maskray.me/blog/2020-11-26-all-about-symbol-versioning#version-script)
```
#!/bin/zsh
dry_run=
if [[ $1 == --dry-run ]]; then dry_run=1; shift; fi

f() {
  for f in $1/*(ND.^x); do
    [[ ${f##*/} =~ '^\.' ]] && continue
    if [[ -n $dry_run ]]; then
      echo $f
    elif [[ $(wc -l < $f) == 1 ]]; then
      echo "echo '$(<$f)' > $f"
    else
      if [[ ${f##*/} == Makefile ]]; then
        printf '%s\n' "sed 's/^        /\\t/' > $f <<'eof'"
      else
        echo "cat > $f <<'eof'"
      fi
      cat $f
      echo eof
    fi
  done
  for d in $1/*(ND/); do
    [[ $d =~ '^\.' ]] && continue
    echo mkdir -p $d
    f $d
  done
}

f ${1:-.}
```

```
clang case/use.c -o exe/libuse.so -lhave -Lexe --shared -fPIC
```

The `-o libuse.so` instruction does not mention how you switched the directory, so the example is difficult to follow.


https://github.com/llvm/llvm-project/pull/72857