Log Message:
Update riece to 2.0.2.

Notable changes from NEWS:

* Major changes in 2.0.2

* Major changes in 2.0.1

** New add-on riece-xfaceb.el, which displays X-Face/Colour Face in
   IRC buffers. (Steve Youngs)

* Major changes in 2.0.0

** Support multiple coding-systems on a server.
   You can use different coding-systems for different channels. (ueno)
   For example:
   (setq riece-channel-coding-system-alist
	 '(("#euc-jp" . euc-jp)
	   ("#utf-8 irc.freenode.net" . utf-8)))

** Support uninstall, unload (dangerous) operations for add-ons.
   Now you can fully customize riece-addons in the add-on listing
   mode. (ueno)

** New mechanism for executing Ruby programs.  To use it, see the
   commentary section of riece-ruby.el. (ueno)

** New add-on riece-eval-ruby.el, which regards user input prefixed by
   ",ruby " as a Ruby program and sends the result to the current
   channel. (ueno)

** New add-on riece-shrink-buffer.el, which now takes care of periodic
   buffer shrinking.  If you have set riece-max-buffer-size, you will
   need to enable the riece-shrink-buffer add-on in the add-on listing
   mode. (ueno)

** Allow "@" instead of " " as a separator of a channel name \ 
and an
   IRC server name. (ueno)

** Rewrite the Japanese manual (riece-ja.texi) for IRC & Emacs
   newbies. (ueno)

** Include a document for developers (doc/HACKING{,.ja}) (ueno)

* Major changes in 1.0.8

** Mitigate file locking scheme of riece-log. (ueno)

** Format idle seconds in human readable form. (ueno)

** Support SXEmacs version names. (Steve Youngs)

** Support CTCP TIME. (Steve Youngs)