* riece-xemacs.el (riece-mouse-2): New variable.

* riece-xemacs.el (riece-mouse-2): New variable.
(riece-popup-menu-popup): New function.

* riece-emacs.el (riece-mouse-2): New variable.
(riece-popup-menu-bogus-filter-constructor): New macro.
(riece-popup-menu-popup): New function.

* riece-commands.el (riece-command-list): Use identity prefix
instead of formatted identity.

* riece-button.el (riece-channel-button-popup-menu): New variable.
(riece-channel-button): Arrange help-echo.
(riece-channel-button-switch-to-channel): New function.
(riece-channel-button-part): New function.
(riece-channel-button-list): New function.
(riece-channel-button-map): New variable.
(riece-button-add-channel-buttons): Add 'local-map and 'keymap
properties on channel buttons.