Git commits in Moodle 2.1.9 by David Mudrák

commit ca2d4d39a2eba41bc5e406425b7aabff0b275be8
Author: David Mudrák <david@moodle.com>
Date:   Sun, 23 Sep 2012 05:32:35 +0800
Tag:    v2.1.9

MDL-35207 Fix 1.9 > 2.x upgrade of workshop submission attachments