[rfa/testsuite] gdb1250.exp: make 'break abort' work with new pending breakpoints

[Michael Elizabeth Chastain]

> None of that reference was in your message, and I don't run tests with
> binutils HEAD regularly...

No big deal.  I wrote to binutils@ when it happened, and I've been
whining it about it my "60 versus HEAD" comparisons.  I figured it
was just information overload.

If you could take a look at pr gdb/1470 now just to get it into your L2
cache I'd be grateful.

> I suppose.  I don't much care either way though the new parameter seems
> awkward to me - isn't the _with_pending in the name enough?

My intuition says "no".  An interface with a parameter is more flexible.

But my intuition can be wrong, and my taste can be misguided.

Michael C