Git commits in Moodle 3.2.x by Tony Levi

commit 73d37b20ed041229d4162579913bd491222ce8af
Author: Tony Levi <tony.levi@netspot.com.au>
Date:   Thu, 15 Jan 2015 12:38:11 +0800
Tag:    v3.2.0-beta

MDL-48856 pgsql: Performance tuning