* refcards/refcard.tex: Update Emacs version to 23.

etc/ChangeLog

+2009-05-15  Chong Yidong  <cyd@stupidchicken.com>
+
+	* refcards/refcard.tex: Update Emacs version to 23.
+
 2009-05-15  Sven Joachim  <svenjoac@gmx.de>
 
         * refcards/de-refcard.tex: Merge changes from refcard.tex.

etc/refcards/refcard.tex

-% Reference Card for GNU Emacs version 22 on Unix systems
+% Reference Card for GNU Emacs version 23 on Unix systems
 %**start of header
 \newcount\columnsperpage
 \newcount\letterpaper
@@ -68,8 +68,8 @@
 % If there were room, it would be nice to see a section on Dired.
 
 \def\versionnumber{2.3}         % version of this manual
-\def\versionyear{2007}          % year manual was updated
-\def\versionemacs{22}           % version of emacs this manual is for
+\def\versionyear{2009}          % year manual was updated
+\def\versionemacs{23}           % version of emacs this manual is for
 \def\year{2009}                 % copyright year
 
 \def\shortcopyrightnotice{\vskip 1ex plus 2 fill