[xmonad] CycleRecentWS - gnome-like workspace switching

[Don Stewart]

janeczek:
> Hi,
> 
> The attached patch provides a function to cycle through
> most recent workspaces with repeated presses of alt-tab (or similar).
> The order of workspaces previewed during the cycling is not affected,
> so it can be used to switch between 2 or 3 most commonly
> visited workspaces.
> It is possible to expand on this idea, for example by having alt-1
> cycle between (most recently seen) emacs windows and alt-2 between
> browser windows, implementing a kind of "dynamic workspaces".
> 
> There is some room for improvement - maybe it is possible to
> ask X about modkeys given only control mask, that way
> it would be marginally easier to use in config file.

Applied, thanks!

- Don