[RFA] testsuite/gdb.c++/ref-types.exp: use runto

[Michael Elizabeth Chastain]

Daniel Berlin writes:
> Insufficient information, too many possibilities, and
> too much of a performance hit.

Well, I'll see the information for myself when I get to virtfunc.exp
and see whether the stabs have sufficient information or not.

As far as "too many possibilities" and "too much of a performance hit"
goes: those are not good reasons for (a) the software to print wrong
answers and then (b) the maintainers to claim that the software isn't
broken.

Michael