Merge branch 'PHP-5.6'

Merge branch 'PHP-5.6'

* PHP-5.6:
  Improve OpenSSL compile flag compatibility, minor updates
  Use crypto method flags; add tlsv1.0 wrapper; add wrapper tests
  Improve server forward secrecy, refactor client SNI
  Add 'honor_cipher_order' server context option
  Add 'capture_session_meta' context option
  Disable TLS compression by default in both clients and servers
  Release ssl buffers
  Add openssl_get_cert_locations() function
  Explicitly set cert verify depth if not specified
  Strengthen default cipher list