Replace Ratpoison with a smarter croutoncycle and fix daemon persistence

Ding dong ratpoison is dead!
This should provide a better path to handling multiple monitors (need to make a fake Xinerama .so to plumb up the xrandr data).

This also now treats host-x11 windows as first-class citizens in croutoncycle, and you can now cycle through simultaneous xorg, xephyr, and host-x11 displays in a reasonable way.  We should be able to make the xbmc target not go through xephyr, for instance (#376). 

This needs wider testing, and it'd be helpful if @drinkcat could fix the croutonclip logic (windows are no longer mapped and unmapped, and it needs to handle *all* xmethods simultaneously. I suggest making heavy use of (and possibly modifying to emit a signal) croutoncycle).  This pull request is for both code review and to track issues that crop up in testing.

An easy-to-install bundle of this branch is available [here](https://docs.google.com/uc?export=download&id=0B1QUtoJwc9L3NmxJcmVqV0ZFSFE).