debian/changelog: bump up svn number; change date etc

git-svn-id: https://svn.code.sf.net/p/postfixadmin/code/branches/postfixadmin-2.3beta@540 a1433add-5e2c-0410-b055-b7f2511e0802

debian/changelog

@@ -1,6 +1,6 @@
 postfixadmin (2.3beta) unstable; urgency=low
 
-  * Subversion revision 527 
+  * Subversion revision 539
   * Fixes for MySQL upgrade issues
   * Improved vacation.pl (renotification options, use SMTP headers, better
     logging, optional external config file)
@@ -11,7 +11,7 @@ postfixadmin (2.3beta) unstable; urgency=low
   * Enhanced mailbox table to make it easier for people to customise where mailboxes live
   * and much more
 
- -- David Goodwin <david.goodwin@palepurple.co.uk>  Sat, 17 Jan 2009 20:06:00 +0000
+ -- David Goodwin <david.goodwin@palepurple.co.uk>  Tue, 20 Jan 2009 20:50:00 +0000
 
 postfixadmin (2.2.1.1) unstable; urgency=low