[dwm] horizontal/vertical layout

Hi,
to make easier the transition (home-work) between a 16:9 monitor and a
4:3 one, I've added the possibility to distribute clients in a
vertical

+-------+------+
| | |
|master |slave |
| | |
|--------------+
| | | |
| | | |
+----+----+----+

or horizontal
+-------+-----+
| | |
|master |-----+
| | |
|-------| |
| |-----|
|slave | |
+-------+-----+

layout.

See patch for 0.5 here
http://wiki.mad.mw/dwm?action=AttachFile&do=get&target=dwm-0.5-horz-vert-layout.diff

With Mod1-t key itt's possible to toggle between both modes.
Mod1-b and Mod1-n makes master window bigger or narrower.

As soon as I figure out how to make the layout sticky to tags I'll do it.

best regards,

-- 
JR