* riece.el: Don't require 'riece-filter.

* riece.el: Don't require 'riece-filter.

* riece-server.el: Require 'riece-filter.

* riece-500.el: Autoload riece-default-handle-numeric-reply from
"riece-handle".

* riece-400.el: Autoload riece-default-handle-numeric-reply from
"riece-handle".

* riece-300.el: Don't require 'riece-filter; autoload
riece-default-handle-numeric-reply from "riece-handle".

* riece-200.el: Autoload riece-default-handle-numeric-reply from
"riece-handle".

* riece-000.el: Don't require 'riece-filter; autoload
riece-default-handle-numeric-reply from "riece-handle".

* riece-server.el (riece-server-keyword-map): Add :protocol.