[PATCH] NEWS: Mention "set foo unlimited".

[Eli Zaretskii]

> From: Pedro Alves <palves@redhat.com>
> Date: Tue, 16 Apr 2013 12:22:24 +0100
> 
> I realized I forgot a NEWS entry for this.  I put it right below the
> "New options" section.
> 
> Okay?

OK, with one comment:

> +* Options that when set to 0 or -1 are handled specially as meaning
> +  unlimited now also accept being set to literal "unlimited".  E.g.,
> +  "set trace-buffer-size unlimited" is now an alias for "set
> +  trace-buffer-size -1" and "set height unlimited" is now an alias for
> +  "set height 0".

That first sentence took me 3 readings to understand.  How about the
following wording instead:

  You can now use a literal value 'unlimited' for options that
  interpret 0 or -1 as meaning "unlimited".

Thanks.