* Issue #688210 by dsnopek: Fix bugs using ahah_helper in a CCK widget.
* Issue #689196 by rikvd: Prevent duplicate function PHP errors when hierarchical select module is also installed.
* Issue #439084 by wulff: Wrong use of parameters for drupal_add_js.
Rewrite of ahah_helper module. Now uses core-style AHAH rendering, but with some edge cases handled that core doesn't take care of. The example has been completely revised and now features a small tutorial. Most of this work was again sponsored by Mollom.
