Git commits in Moodle 3.4.2 by Matteo Scaramuccia

commit c499b15fe04574b40eddebfb17e006d0db482463
Author: Matteo Scaramuccia <moodle@matteoscaramuccia.com>
Date:   Fri, 09 Mar 2018 06:27:25 +0800
Tag:    v3.4.2

MDL-61626 core_dml: pgsql and schema qualification.