VMM/cli/clihelp: Added missing help messages.
Added descriptions of subcommands listaddresses, listaliases,
listrelocated and listusers.
..|curr_vers_rel_date|replace:: The most current version of vmm is 0.6.0, released on 28 June 2012...|rel_hist|replace:: Older releases are listed in the :doc:`release_history`.