[Xmonad] darcs patch: first shot at a floating layer

[Daniel Wagner]

David Glasser wrote:
 > Excellent.  The only downside to doing it this way is that to have
 > different bars on different windows, you'd have to make the output

You shouldn't need to do any fancy multiplexing, or have different 
status bars on different workspaces.  Just send a new line (that has the 
updated workspace number) to dzen's stdin.

~d