nm_access_point_get_hw_address() is deprecated in 0.9.
Also change 'hwaddr' parameter for 'nmcli dev wifi list' to 'bssid'. 'hwaddr'
still works but is deprecated and not documented any more.
Remove all support for user settings services from nmcli. Update its
manpage to reflect this.
Manpage edits also anticipate changes to be made in regards to how
secrets are managed.