Git commits in Moodle 3.10.2 by Brendan Heywood

commit f5e822222d326a51afc7ef1802083e8acb5a614b
Author: Brendan Heywood <brendan@catalyst-au.net>
Date:   Mon, 22 Feb 2021 11:43:14 +0800
Tag:    v3.10.2

MDL-70424 auth: Avoid random changes to $CFG->auth

commit 42ddf9c0daf29b981c8401181c11167311679cc2
Author: Brendan Heywood <brendan@catalyst-au.net>
Date:   Sat, 07 Nov 2020 14:27:46 +0800
Tag:    v3.10.2

MDL-51111 cache: Don't lock and write the config file if unchanged