Course MDL-23062 turned off $doanything super admin power for a editing capability check to effect a switched to role from admin.

MDL-19776 make sure contexts are fully initialised after each core upgrade, it is relatively cheap, so it should not cause any problems

MDL-23106 all tables created in upgrade.php MUST be present in install.xml - we will most probably drop the two old blocks tables before release but we can not allow exceptions like this, sorry

MDL-23106 removing unnecessary conversion of message_providers data - not installed yet in regular upgrades now

MDL-23106 fixing 2.0 upgrade paths - moving core table tweaks to the very beginning so that it is available for the whole upgrade