[PATCH] find-debuginfo.sh: Exit with real exit status in parallel jobs

[Keith Seitz]

Mark wrote:
> I pushed you patch with the above change for the single-thread case.
>
> It would be appreciated if you could incorporate it into your testing.
> Sadly we don't have any script tests, so we do rely on external
> testing.

No problemo. I've hacked my mass prebuilder setup to ignore the -j option
and re-tested the whole thing with a gdb NVR bump and one where I introduced
an abort() into gdb's index generation.

Eveyrthing behaves as I would expect.

Keith