Git commits in Moodle 2.3.2 by Nathan Mares

commit c6d7689621d7f28e552d3fcb499557ec3e3ddaf6
Author: Nathan Mares <nathan@catalyst-au.net>
Date:   Tue, 17 Jul 2012 17:37:06 +0800
Tag:    v2.3.2

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

commit 371d354ab3eb85c7315c4982a800a6b217cd905e
Author: Nathan Mares <nathan@catalyst-au.net>
Date:   Tue, 17 Jul 2012 17:11:57 +0800
Tag:    v2.3.2

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