Author: Daniel Neis
MDL-30960 messages: add option to set authtype
http://git.moodle.org/gw?p=moodle.git;a=commit;h=2108ac8a4faf18b37d14dd14a77b0d262eba67f2
http://github.com/moodle/moodle/commit/2108ac8a4faf18b37d14dd14a77b0d262eba67f2
+ 3.0 en [configsmtpauthtype,message_email]
+ 3.0 en [smtpauthtype,message_email]