improve / fix postgres support.

laravel/database/connectors/postgres.php

@@ -2,6 +2,18 @@
 
 class Postgres extends Connector {
 
+	/**
+	 * The PDO connection options.
+	 *
+	 * @var array
+	 */
+	protected $options = array(
+			PDO::ATTR_CASE => PDO::CASE_LOWER,
+			PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+			PDO::ATTR_ORACLE_NULLS => PDO::NULL_NATURAL,
+			PDO::ATTR_STRINGIFY_FETCHES => false,
+	);
+
 	/**
 	 * Establish a PDO database connection.
 	 *