Fixed PHP-1161: Implement the SCRAM-SHA-1 SASL Mechanism
Improve readability
WS & CS
Merge pull request #730 from bjori/PHP-1161-SCRAM-SHA1

PHP-1161 Support for SCRAM-SHA-1

* bjori/PHP-1161-SCRAM-SHA1:
  WS & CS
  Improve readability
  Fixed PHP-1161: Implement the SCRAM-SHA-1 SASL Mechanism