MDL-16500  Removed the old Jabber class from the module and moved to a new one called xmpphp in core libraries
           Also cleaned up some notices in message/edit.php

MDL-16180 - change field precision of parent_type to 20 in mnet rpc function table to fit 'portfolio'

MDL-16263 A way for students to flag/bookmark, particular questions during a quiz attempt for later review.

This is an initial implementation that is now at a working state, but with a few things left to do. It seemed like a good idea to commit it before leaving work on Friday night.

MDL-13766 rerunning latest repo upgrade block, the 2008082600 was not correct in upgrade.php, should have been 2008082601

1. Chanage database, create 2 more tables for repository
2. One-step download in file picker