Changes since DRUPAL-6--1-4:
- #413916 by hunmonk, rfay: New users deleted inappropriately. this fixes the no-so-well-implemented auto user deletion feature -- much more stable and less dangerous now.
- #446638 by hunmonk: properly theme login successful message.
- #362388 by hunmonk: make help links conditional on help module.
- #368699 by hunmonk: re-send validation link always appears if non-authenticated role is set to auth user.
- #421532 by joostvdl: Dutch translation plural formula corrected.
- #461662 (SA-CONTRIB-2009-026): Fix access bypass for previously blocked users.