Mercator initial changes

Includes the following changes:
* Added Australian regions to the default list.
* Added Alan Storm's Pulsestorm Launcher.
* Added Alan Storm's System Config Search extension (with some changes).
* Modified Mage.php to show full strings in stack traces
* Added Enhanced Admin Product Grid extension
* Added AOE Scheduler.
* Added custom shipping rate.
* Added Flagbit Change Attribute Set.
* Added Cm_Cache_Backend_Redis backend.
* Added Fontis Blog.