[dwm] recent changes since 3.6[.1]

Hi there,

dwm-3.7 is on its way, and some more polishing appeared:

- I replaced the Arg-union typedef with a const char *, this
  leads to a cleaner config.h in Key definitions, e.g.
  [..]
        { MODKEY, XK_d, incnmaster, "-1" }, \
        { MODKEY, XK_i, incnmaster, "1" }, \
        { MODKEY, XK_h, incmasterw, "-15" }, \
        { MODKEY, XK_l, incmasterw, "15" }, \
  [..]
- zoom() now only works in tiling layout, togglemax() is
  externalized now and bound to Mod1-m (versatile layout only)
  -> this made zoom() less cluttered and the Mod1-Return
  behavior more predictable
- versatile clients are indicated by an empty square in front of
  their title, maximized versatile clients are indicated by a
  filled square in front of their title (basically I reuse the
  drawsquare() stuff for tags)
- I also renamed resizemaster() into incmasterw(), because it
  behaves similiar to incnmaster().

So please check if hg tip is usable (to me it is). Personally I
believe dwm is really polished now.

Regards,

-- 
 Anselm R. Garbe >< http://www.suckless.org/ >< GPG key: 0D73F361