Git commits in Moodle 2.4.x by Nathan Mares

commit 8131a848dd34832398f76000694122ba8e612dcd
Author: Nathan Mares <nathan@catalyst-au.net>
Date:   Wed, 28 Nov 2012 07:21:32 +0800
Tag:    v2.4.0

MDL-36914: Re-associate all grade_item records when upgrading assignments to prevent data loss

commit 4cb18cb080b9b5a3e08dee45b1c63ac28f98984c
Author: Nathan Mares <nathan@catalyst-au.net>
Date:   Tue, 17 Jul 2012 17:37:06 +0800
Tag:    v2.4.0-beta

MDL-34372: Fix query in backup_cron_helper so it works on Postgres 8.3

commit 6bfa9c49d556217a4274405c879f30077f433301
Author: Nathan Mares <nathan@catalyst-au.net>
Date:   Tue, 17 Jul 2012 17:11:57 +0800
Tag:    v2.4.0-beta

MDL-34368: Fix broken query in so tokens are correctly checked against the linked service