dbus: add wait_for_dbus() & respawn
connman: depends on dbus, so wait for it
ConsoleKit: depends on dbus, so wait for it & respawn
udisks: depends on dbus, so wait for it

TODO: respawn ?
xbmc: depends on dbus, so wait for it
Merge branch 'master' of github.com:OpenELEC/OpenELEC.tv