mod_s2s_keepalive: Fix response handler (thanks Ge0rG) So there are no 'iq-{result,error}/host' events, mod_iq only fires events for result stanzas that include the full 'id' attr. This fixes it by hooking the stanza router event.

-- this module is deprecated, log an error and load the superseding module instead
module:depends"smacks"

module:log("error", "mod_smacks_offline is deprecated! Just use mod_smacks!");