Mention non-stop mode in NEWS.

[Eli Zaretskii]

> From: Pedro Alves <pedro@codesourcery.com>
> Date: Sun, 4 Oct 2009 16:57:46 +0100
> Cc: "'Eli Zaretskii'" <eliz@gnu.org>
> 
> On Sunday 04 October 2009 16:51:25, Pedro Alves wrote:
> > Non-stop mode isn't described in the NEWS yet.
> > 
> > Okay for main trunk and branch?
> > 
> > Very sorry for the delay in getting to this...
> > 
> 
> > +  to implement the non-stop mode remote protocol extensions, as
> > +  described in "Remote Non-Stop" section.  The GDB remote stub,
> 
> Bah, sorry, "section" of what?
> 
> Updated patch below.

OK.