Git commits in Moodle 2.7.3 by Simey Lameze

commit 7972603cc4398fe87d7f9a86216d2d71f29c1270
Author: Simey Lameze <simey@moodle.com>
Date:   Tue, 16 Sep 2014 10:16:37 +0800
Tag:    v2.7.3

MDL-44257 lib: fix the attachment code to accept tempdir and dataroot.


commit 1780c99e0661a50d09657d339c4f82e0c2960c1a
Author: Simey Lameze <simey@moodle.com>
Date:   Fri, 12 Sep 2014 16:45:49 +0800
Tag:    v2.7.3

MDL-44257 message: added test to make sure the stored file still exists


commit bd2519c596d2cb744508e54dcd0c64eb777f4a01
Author: Simey Lameze <simey@moodle.com>
Date:   Fri, 25 Jul 2014 11:44:44 +0800
Tag:    v2.7.3

MDL-44257 message: check if the attachment exists before remove it