add database.profile config option.

laravel/database/connection.php

@@ -1,4 +1,4 @@
-<?php namespace Laravel\Database; use PDO, PDOStatement, Laravel\Event;
+<?php namespace Laravel\Database; use PDO, PDOStatement, Laravel\Config, Laravel\Event;
 
 class Connection {
 
@@ -222,7 +222,10 @@ class Connection {
 		// Once we have execute the query, we log the SQL, bindings, and
 		// execution time in a static array that is accessed by all of
 		// the connections used by the application.
-		$this->log($sql, $bindings, $time);
+		if (Config::get('database.profile'))
+		{
+			$this->log($sql, $bindings, $time);
+		}
 
 		return array($statement, $result);
 	}