Log Message:
Update to 6.07:

Version 6.06    2010-02-05
   Added dm_zdump example script.
   Minor bug where %Z printf format didn't always work.
   Improved TZ::periods functionality
   Fixed bug in Date_ConvTZ where empty values weren't defaulting to local timezone.
      Robert Eden
   Fixed a couple of problems in the generated timezones for some odd cases
      (America/Resolute and Asia/Tehran).
   Added support for 5pm back in (it was omitted accidentally).  Mark Kennedy
   Fixed a minor warning.  Morten Bjoernsvik
   Some additional speedups.
   Newest zoneinfo data.

Version 6.07    2010-02-05
   Fixed bug in Date_TimeZone where it wasn't returning the timezone.  Robert Eden