Git commits in Moodle 3.9.x by Mark Nelson

commit 4dc6c7a79d1c647b328f454bae4f023ca6e2d9fa
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Mon, 22 Mar 2021 22:55:20 +0800
Tag:    v3.9.7

MDL-71171 customfield_text: ensure we set defaults properly

commit c197d3f14bebb4f7a3d4b897d8eaeed129d625d0
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Mon, 22 Mar 2021 21:55:49 +0800
Tag:    v3.9.7

MDL-71170 customfield_text: use correct error string

commit 1e10d9328ed0ddd04aeafd543606baecccf040df
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Sat, 09 Jan 2021 14:13:08 +0800
Tag:    v3.9.5

MDL-70125 core_grade: do not change overridden status during regrading

commit 19dc872bca094194cdbde3ba982b57daba0db701
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Wed, 23 Dec 2020 15:48:52 +0800
Tag:    v3.9.4

MDL-70034 gradingform_guide: use new API to retrieve grade item name

commit 7daa126d1ddb39f114f3989ba2896540f0471e36
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Mon, 20 Apr 2020 20:35:57 +0800
Tag:    v3.9.0-beta

MDL-58018 core: add support to database for read-only sessions

commit 4400ed3e1c4d6a411b857d1b3353839018ceb589
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Mon, 20 Apr 2020 20:35:50 +0800
Tag:    v3.9.0-beta

MDL-58018 core: finish dev to support open sessions without a lock

commit 39770792ca624a611eaaca6e973306938771fe83
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Mon, 20 Apr 2020 20:32:37 +0800
Tag:    v3.9.0-beta

MDL-58018 core: add support to redis for read-only sessions

commit 47f3fa131a99556106ea28505c05b63b18ed7163
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Thu, 02 Apr 2020 22:32:16 +0800
Tag:    v3.9.0-beta

MDL-67886 core: check_database_schema() checks for extra indexes

commit fad610045bb028801d7fddcf1019e3a64ddbfb4c
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Wed, 01 Apr 2020 03:08:07 +0800
Tag:    v3.9.0-beta

MDL-67886 tool_xmldb: checks for extra indexes

commit 52f993651caeb41709d3f86b0404147756b0f786
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Fri, 27 Mar 2020 06:19:19 +0800
Tag:    v3.9.0-beta

MDL-68193 core: added new database_text_field_content_replaced event

commit a8c38ce85ba1fc94ea61372a7416946c1afec29f
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Fri, 27 Mar 2020 01:06:41 +0800
Tag:    v3.9.0-beta

MDL-67886 core: check_database_schema() checks for missing indexes