Author: Petr Skoda
MDL-45203 implement new event user_password_updated
http://git.moodle.org/gw?p=moodle.git;a=commit;h=cd25119e347c27041a1c603e418b3c0782843a7c
http://github.com/moodle/moodle/commit/cd25119e347c27041a1c603e418b3c0782843a7c
+ 2.7 en [eventuserpasswordupdated,core]