[dwm] spiral tiling layout

Hi,

I stumbled upon the list of Xmonad extensions[1] and saw a spiral tiling layout
there. Attached is the resulting patch that implements something similar for
dwm.

A quick ascii-art representation:

+-----------+-----------+
| | |
| | |
| | |
| +--+--+-----+
| | |-+| |
| +--+--+ |
| | | |
+-----------+-----+-----+

[1]: http://www.xmonad.org/contrib.html

Regards,

-- 
Jeroen Schot
schot_AT_a-eskwadraat.nl (mail & jabber)
http://schot.a-eskwadraat.nl