- ad_text.module
 - ad_html.module
 - ad_channel.module
 - ad_actions.module
 - ad_external.module
 - ad.module
    o bug #637624: remove pass-by-reference calls to adapi

    o bug #547474: removed module, notifications can now be built with the new
      ad_actions module
 - ad_actions.module
    o bug #547474: new module, defines numerous ad triggers and advanced
      actions
 - ad.module
    o bug #547474: reorder logic so clicking an ad is recorded before the
      trigger is called