* riece-rdcc.el: Require 'riece-ctcp.

* riece-rdcc.el: Require 'riece-ctcp.
(riece-rdcc-insinuate): Add "DCC" to
riece-ctcp-additional-clientinfo.

* riece-ctcp.el (riece-ctcp-additional-clientinfo): New variable.
(riece-command-ctcp-clientinfo): New command.
(riece-ctcp-insinuate): Bind it in riece-dialogue-mode-map.
(riece-handle-ctcp-clientinfo-request): New handler.
(riece-handle-ctcp-clientinfo-response): New handler.

* riece-server.el (riece-open-server): No need to use
get-buffer-create to reuse process buffer.