The generic WP-Logging class
Merge branch 'master' of https://github.com/wp-e-commerce/WP-e-Commerce into wpsc-logging
Include the Logging class
Changes to the original Logging class
Cleanup on aisle two.

Made some notes, some coding standards cleanup, docs fixes.
Add note re: back compat
Merge pull request #1491 from omarabid/wpsc-logging

WPSC_Logging Class