Fix perl5db.t test 41 on VMS.

We're getting newlines in between items, and the easiest way to
deal with it is make them explicit so we expect what we're getting
and it's done the same everywhere.
Make runperl normalize newlines with multiple output lines.

On VMS only, because rarely but occasionally (such as with
perl5db.t) runperl produces multiple lines of output and they
all need the same treatment.