Git commits in Moodle 3.1.x by Petr Skoda

commit 650197e4dca12276948ec9d1fb1223996bf62e32
Author: Petr Skoda <petr.skoda@totaralms.com>
Date:   Wed, 07 Dec 2016 10:45:10 +0800
Tag:    v3.1.5

MDL-57027 fix get_users_by_capability()


commit 267ac1b9ebf04c5dbbc5e9b2307f321385241ee1
Author: Petr Skoda <petr.skoda@totaralms.com>
Date:   Tue, 15 Dec 2015 08:17:49 +0800
Tag:    v3.1.0-beta

MDL-52511 dml: add support for PostgreSQL 9.5