Git commits in Moodle 2.1.7 by Jonathan Harker

commit f0da446c567c3e2b16981e58269658822a4c2127
Author: Jonathan Harker <jonathan@catalyst.net.nz>
Date:   Wed, 20 Jun 2012 11:45:47 +0800
Tag:    v2.1.7

MDL-27125 better manage file handles when downloading multiple files.