Git commits in Moodle 2.1.x by Kevin Wiliarty

commit 78dd6d4813baab8b170c8d17fe4190d6a7a8f3c8
Author: Kevin Wiliarty <kevin.wiliarty@gmail.com>
Date:   Wed, 20 Jun 2012 02:14:49 +0800
Tag:    v2.1.7

MDL-33749 follow redirects for URL downloader