Git commits in Moodle 3.7.2 by Matt Porritt

commit d6301a6dd30a5a728a2f79b9740bbe310614540e
Author: Matt Porritt <mattp@catalyst-net.au>
Date:   Tue, 25 Jun 2019 20:17:53 +0800
Tag:    v3.7.2

MDL-56835 report_participation: release session lock