[xmonad] darcs patch: Cleanup X.L.Mosaic, without breaking it

[Wirt Wolff]

Excerpts from Adam Vogt's message of Wed Feb 18 19:25:56 -0700 2009:
> Mon Feb  9 21:27:27 EST 2009  Adam Vogt <vogt.adam at gmail.com>
>  prevent users from causing non-termination with negative elements
> 
> Wed Feb 18 21:24:17 EST 2009  Adam Vogt <vogt.adam at gmail.com>
>   * Cleanup X.L.Mosaic, without breaking it

Does indeed work sensibly with negative list elements. Applies cleanly.
-- 
wmw