Refactor UpdateMembershipRecord script - bypass reminders for memberships with status overrides (cancelled, deceased or pending status memberships)

Script needs to be refactored to prevent cancelled memberships / members w/ overriden status from getting renewal reminders.
http://forum.civicrm.org/index.php/topic,14134.0/topicseen.html

It's ok to send a scheduled reminder to an "expired" member - as long as the renewal_reminder_date is <= today(). This can happen when the script isn't run everyday.

(Kiran - you can move this up to 3.2 if you that seems appropriate)