Git commits in Moodle 2.8.4 by Matteo Scaramuccia

commit 48a515c37b195a00398bc6d2d6bbc6ac02a77226
Author: Matteo Scaramuccia <moodle@matteoscaramuccia.com>
Date:   Sun, 11 Jan 2015 16:38:56 +0800
Tag:    v2.8.4

MDL-48799 Files API: fixed legacy directory fallback.