[RFA/MI testsuite] Add mi_runto

[Keith Seitz]

On Mon, 9 Sep 2002, Elena Zannoni wrote:

> Same question as for the other patch. How does this interact with 
> mi_run_to?
> Do we need both versions?

Like mi_step/next_to, I think that I could have made a better decision to 
implement this in terms of mi_run_to_helper, but there is still one 
shortcoming, though: mi_run_to does not know how to start the target 
running, while mi_runto does.

If you'd like I can rewrite both of these patches using mi_run_to procs. 
(I'll just assume that you'd like that and start on that. I don't really 
know right now what I was thinking when I rewrote this all again.)

Keith