Author: Willy Lee
MDL-41497 auth_db: Added help text for using odbc dsn names instead
http://git.moodle.org/gw?p=moodle.git;a=commit;h=42fd2c0b67c3e4b4aedd15a84559889cbf10b887
http://github.com/moodle/moodle/commit/42fd2c0b67c3e4b4aedd15a84559889cbf10b887
+ 2.5 en [auth_dbhost,auth_db]
+ 2.5 en [auth_dbname,auth_db]