mock out the Zend_Mail_Transport object in unit tests (fixes #3466, BP
from #3443)
(cherry picked from commit 2d73654a5ed2755c2cfe52a8be9e10e49e95eb1a)
use opZendMailTransportMock for CommunityMemberTable::processJoinConfirm()
tests (fixes #3466, BP from #3443)
(cherry picked from commit b9a0894299d19644281bf3eca2a37ec572371b41)
Merge branch 't-3466' into stable-3.8.x