[rfa] Use get_number_or_range for kill inferior etc.

[Eli Zaretskii]

> Date: Sat, 26 Feb 2011 10:44:45 -0800
> From: Michael Snyder <msnyder@vmware.com>
> CC: "pedro@codesourcery.com" <pedro@codesourcery.com>, 
>  "gdb-patches@sourceware.org" <gdb-patches@sourceware.org>
> 
> > Then why doesn't this patch do something about that?  Maybe I'm
> > missing some related plan, if so apologies.
> 
> I thought Pedro was going to do it.
> Perhaps he thought I was going to.
> Either way, it will get done soon.

Fine with me, thanks.