(WIP) CRM-18408, update for TLS issues seen in PHP5.6 #183
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PHP5.6 introduces peer validation by default - this is a good thing.
But it makes some TLS negotiation issues visible too. This ports changes from Net_SMTP-1.7.1 to our ancient patched 2011 version.
We could also update Net_SMTP properly, but our version is modified so that wants review.
This works for the specific site I was able to test (Elasticemail).
This commit accidentally includes 1f656ec which should remain but be separately committed.