Merge branch 'PHP-5.6' into PHP-7.0

* PHP-5.6:
  Fixed and improved tests
  test to function socket_getopt();
  test to function socket_clear_error();;
  test to function socket_shutdown();
  test to function socket_send();
  test to function gethostname ( void );
  test to function DateTimeZone::getLocation();
  test to function stream_get_transports();
  test to function stream_get_wrappers();
  test to function stream_socket_enable_crypto();
  test to function stream_socket_get_name();
  Create stream_socket_recvfrom.phpt
  test to stream function set_file_buffer.phpt();
  test to function PDO_getAvaliableDrivers;
  test to misc. function connection_status();
  test to function connection_aborted();
  test to function memory_get_peak_usage();