[BC] Replaced extension of \PDOStatement with a composition to avoid having to replicate the \PDOStatement interface in ResultStatement

Fixes #3336.

fix code style

Adding Windows Authentication compatibility according to http://php.net/manual/en/function.sqlsrv-connect.php
"By default, the connection is attempted using Windows Authentication. To connect using SQL Server Authentication, include "UID" and "PWD" in the connection options array."

The first capturing group of the parser regex was stopping form the moment it would find a `[` character.