* Update cli callbacks to work with libcli 1.6.

* Update cli callbacks to work with libcli 1.6.
  This supports privileged and unprivileged commands, as well as a configuration
  mode
* Add help for all cli commands
* Add "show version" command
* Fix uptime counter display
* Fix nasty bug where cluster basetime can be set to 0 when sending initial
  heartbeat
* Don't rmmod ip_conntrack, as this can take a lot of time
* Re-order logging in routeset such that the action is given before any error
* Use the correct gateway address when deleting routes
* Remove any routes when address changes
* Require authentication if telnet from remote ip
* Require enable password always
* Return error if show pool done on slave
* We MUST immediately exit if we're the wrong master!