Git commits in Moodle 3.0.4 by Dani Palou

commit 5d1cc5707e385460c21fe41e8bf572dc85b09bec
Author: Dani Palou <dani@moodle.com>
Date:   Thu, 31 Mar 2016 21:38:55 +0800
Tag:    v3.0.4

MDL-53671 book: Return whole filepath in book_export_contents