Git commits in Moodle 3.8.4 by Matteo Scaramuccia

commit a28a24e2f25db25285520af84533c978f7a0c604
Author: Matteo Scaramuccia <moodle@matteoscaramuccia.com>
Date:   Thu, 11 Jun 2020 04:44:07 +0800
Tag:    v3.8.4

MDL-66322 travis: Configure a local copy of 'exttests'


commit 0cf43f11f07f0066d2b185365899f52435ca1efc
Author: Matteo Scaramuccia <moodle@matteoscaramuccia.com>
Date:   Sun, 03 May 2020 01:32:06 +0800
Tag:    v3.8.4

MDL-68588 Backup: Hide ->backuptempdir in exception info