Git commits in Moodle 3.7.3 by Brendan Heywood

commit fb5ed6a5ca05e10da7cbddfcc79bef2ccf70815d
Author: Brendan Heywood <brendan@catalyst-au.net>
Date:   Tue, 22 Oct 2019 10:33:23 +0800
Tag:    v3.7.3

MDL-66984 auth: Allow $USER to be used in change_password_url


commit 413b3213442307070ace60cd9f9d3902f10377a3
Author: Brendan Heywood <brendan@catalyst-au.net>
Date:   Thu, 17 Oct 2019 08:01:33 +0800
Tag:    v3.7.3

MDL-66935 core_lock: Fix resource key clashes in db and postgres locks


commit 9c1f81775e34539da7e3cdfec837a06b35b58606
Author: Brendan Heywood <brendan@catalyst-au.net>
Date:   Wed, 16 Oct 2019 17:25:02 +0800
Tag:    v3.7.3

MDL-66927 cron: Process new adhoc tasks immediately