[PATCH 1/2] gdb.threads/attach-into-signal.exp: cleanup

[Joel Brobecker]

> I think this ought to be a general rule.  We need exceptions to it for
> some executable-changed cases, but I think in general different tests
> should build different executables, because this makes it easier to do
> additional checking by hand.

Agreed! (FWIW)

-- 
Joel