Git commits in Moodle 3.9.3 by Stephen Bourget

commit 5cb1cf76954083480ae7afc41d7f9842062c451b
Author: Stephen Bourget <steve.bourget@sau19.org>
Date:   Thu, 09 May 2019 08:47:29 +0800
Tag:    v3.9.3

MDL-69900 core_backup: Allow IMSCC v1.0 restore to finish