don't override cwconfig.SMTP in devtools.testlib
Since CW4, we have at some place some import to testlib module, so we can no more send mail in these CW instance since there is a line replacing SMTP by MockSMTP ...
Since CW4, we have at some place some import to testlib module, so we can no more send mail in these CW instance since there is a line replacing SMTP by MockSMTP ...