* riece-xface.el (riece-xface-insinuate): Set

* riece-xface.el (riece-xface-insinuate): Set
'riece-update-buffer-functions local to the user-list buffer.

* riece-unread.el: Require 'riece-signal instead of
'riece-display.
(riece-unread-after-display-message-function): Emit
'riece-update-buffer signal instead of
'riece-unread-channel-list-update signal.

* riece-ndcc.el: Don't require 'riece-display.

* riece-naming.el: Require 'riece-signal instead of
'riece-display.
(riece-naming-assert-rename): Don't rename buffer.

* riece-history.el (riece-history-format-channel-list-line): Don't
append "\n".

* riece-handle.el: Require 'riece-signal instead of
'riece-display.
(riece-parse-modes): Rename from riece-parse-channel-modes; don't
update channel modes.
(riece-handle-channel-modes): New function which processes the
result of riece-parse-modes.
(riece-handle-mode-message): Use it.

* riece-filter.el: Don't require 'riece-display.
* riece-display.el: Require 'riece-signal; connect
'riece-update-buffer signal.

* riece-ctcp.el: Don't require 'riece-display.

* riece-signal.el: New module splitted from riece-display.el.
* Makefile.am (EXTRA_DIST): Add riece-signal.
* COMPILE (riece-modules): Add riece-signal.