Compatibility symlink from old dynamic loader name to new dynamic loader name doesn't work.

[Roland McGrath]

The patch is clearly a dismal kludge that would never be acceptable.  

I don't understand why the stat-based logic at the top of
_dl_map_object_from_fd is not handling this case already.

> In summary:
> - To support compatibility symlinks from old dynamic loader names to new
> dynamic loader names will require refactoring _dl_map_object_from_fd to
> actually detect if two DSOs are the same.

That's exactly what it already does.