mod_storage_xmlarchive: Fix "user" iteration API Fixes use in prosody-migrator. Otherwise this particular API is not used much, or this would have been noticed before. Usually it is a different store like 'accounts' that is responsible for providing the authoritative list of users. Thanks Ge0rG for testing

-- 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!");