Phergilicious: In honour of all the SSL bugs found by the Phergie project re-writing on top of React.

• Bugfix: Only toggle the stream crypto handshake once (@DaveRandom and @rdlowrey)
• Bugfix: Workaround for ext-openssl buffering bug (@DaveRandom)
• Bugfix: SNI fix for PHP < 5.6 (@DaveRandom)