Bumping verison number

CHANGELOG.txt

 // $Id$
 
+Drupal 5.17, xxxx-xx-xx (development version)
+-----------------------
+
 Drupal 5.16, 2009-02-25
 -----------------------
 - Fixed a security issue, (Local file inclusion on Windows), see SA-CORE-2009-004.

modules/system/system.module

@@ -6,7 +6,7 @@
  * Configuration system that lets administrators modify the workings of the site.
  */
 
-define('VERSION', '5.16');
+define('VERSION', '5.17-dev');
 
 /**
  * Implementation of hook_help().