Fix ChangeLog, add missing :version.

lisp/ChangeLog

 2012-09-16  Leo Liu  <sdl.web@gmail.com>
 
 	IDO: Disable match re-ordering for buffer switching.
-	* ido.el (ido-confirm-unique-completion): New variable.
+	* ido.el (ido-buffer-disable-smart-matches): New variable.
 	(ido-set-matches-1): Use it.  (Bug#2042)
 
 2012-09-12  Jose Marino  <marinoj@nso.edu>  (tiny change)

lisp/ido.el

@@ -501,6 +501,7 @@ By default, ido aranges matches in the following order:
   full-matches > suffix matches > prefix matches > remaining matches
 
 which can get in the way for buffer switching."
+  :version "24.3"
   :type 'boolean
   :group 'ido)