Git commits in Moodle 2.3.1 by Jonathan Harker

commit 3bcca35591b11e0ecc4d4ca4e9e63b7be55cf045
Author: Jonathan Harker <jonathan@catalyst.net.nz>
Date:   Wed, 20 Jun 2012 11:45:47 +0800
Tag:    v2.3.1

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