Git commits in Moodle 3.7.2 by sam marshall

commit 8571a061e7c68708d37d60b964136bd727789fdb
Author: sam marshall <s.marshall@open.ac.uk>
Date:   Thu, 29 Aug 2019 17:47:09 +0800
Tag:    v3.7.2

MDL-63315 DB: Postgres - Clear cursors in persistent connection


commit 96482ded5edbb4009c7b5abc3a5edf8ec2db7a56
Author: sam marshall <s.marshall@open.ac.uk>
Date:   Thu, 15 Aug 2019 20:10:13 +0800
Tag:    v3.7.2

MDL-66378 Behat: Speed up 'before/after' step in Chrome


commit df8633b8d0277e62da1ef118805b83f34283b1e5
Author: sam marshall <s.marshall@open.ac.uk>
Date:   Sat, 03 Aug 2019 00:14:16 +0800
Tag:    v3.7.2

MDL-66309 block_recentlyaccesseditems: Improve upgrade performance


commit aa01e0e5745d03d3c76be7df637631db24054dda
Author: sam marshall <s.marshall@open.ac.uk>
Date:   Fri, 12 Jul 2019 18:50:51 +0800
Tag:    v3.7.2

MDL-66132 Search: Behat tests should use simpledb, fix mock count