Author: Leon Stringer
MDL-65847 auth_db: user_update() handle errors
The external database authentication plugin (auth_db) can update the
external database if mapped fields are set to Update external: On
update. This change adds error handling in case this update fails.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=5049102eb695cbc1976fde325adac379c37b0acd
http://github.com/moodle/moodle/commit/5049102eb695cbc1976fde325adac379c37b0acd
+ 4.0 en [auth_dbupdateerror,auth_db]