Git commits in Moodle 2.9.9 by Juan Leyva

commit 0ee30fc5b847e1e35824eb3b5e5ca391acf1aa34
Author: Juan Leyva <juanleyvadelgado@gmail.com>
Date:   Mon, 07 Nov 2016 20:46:11 +0800
Tag:    v2.9.9

MDL-56268 webservice: Format backtrace to avoid display private datawq


commit f01632affad0c9cc3c007b1aafc63597f9dcdc1e
Author: Juan Leyva <juanleyvadelgado@gmail.com>
Date:   Thu, 22 Sep 2016 17:52:11 +0800
Tag:    v2.9.9

MDL-56065 user: Fix update_users Web Service