[python] Allow explicit locations in breakpoints.

[Eli Zaretskii]

> From: Phil Muldoon <pmuldoon@redhat.com>
> Date: Thu, 7 Dec 2017 10:02:44 +0000
> 
> diff --git a/gdb/NEWS b/gdb/NEWS
> index 9246659bfb..592fe70156 100644
> --- a/gdb/NEWS
> +++ b/gdb/NEWS
> @@ -24,6 +24,9 @@
>       gdb.new_thread are emitted.  See the manual for further
>       description of these.
>  
> +  ** Python breakpoints can now accept explicit locations.  See the
> +     manual for a further description of this feature.
                   ^^^^^^^^^
"the detailed"?

Otherwise the documentation parts are okay.  Thanks.