Record chroot names in displays and improve croutoncycle.

croutoncycle now cycles based on display number, so xephyr and xorg chroots can
run at the same time.
croutoncycle also has a direct-switch option as well as a list option.
Improve croutoncycle output
croutoncycle bugfixes
Add croutonmapraised libs to Makefile
Add mapraised to x11-common
Add TODO to replace ratpoison.