CRM-12523 follow up, set timezone when running cron
Without setting timezone it may send reminders out based on an incorrect timezone assumption - e.g. sending after an event has completed. This has been somewhat intermittantly reported which is confusing as it would seem to affect a large portion of WP sites outside the UK

----------------------------------------
* CRM-12523: Wordpress timezone settings not carried to CiviCRM
  http://issues.civicrm.org/jira/browse/CRM-12523