Merge branch 'MDL-58584-master' of git://github.com/rezaies/moodle

diff --cc lib/upgrade.txt
index 96599b3,12816d5..58a2ef1
--- 1/lib/upgrade.txt
--- 2/lib/upgrade.txt
+++ b/lib/upgrade.txt
@@@ -28,7 -28,9 +28,10 @@@ information provided here is intended e
    - Currently supported by:
      - mod_assign
      - mod_quiz
 +* Added a native MySQL / MariaDB lock implementation
+ * The database drivers (moodle_database and subclasses) don't need to implement get_columns() anymore.
+   They have to implement fetch_columns instead.
+ * Added function cleanup_after_drop to the database_manager class to take care of all the cleanups that need to be done after a table is dropped.
  
  === 3.8 ===
  * Add CLI option to notify all cron tasks to stop: admin/cli/cron.php --stop