fix autoloading system path issue.

laravel/autoloader.php

@@ -60,11 +60,6 @@ class_alias(static::$aliases[$class], $class);
 		{
 			$namespace = substr($class, 0, $slash);
 
-			if ($namespace == 'Laravel')
-			{
-				return static::load_psr($class, path('base'));
-			}
-
 			// If the class namespace is mapped to a directory, we will load the class
 			// using the PSR-0 standards from that directory; however, we will trim
 			// off the beginning of the namespace to account for files in the root

laravel/core.php

@@ -37,6 +37,13 @@
  */
 Autoloader::$aliases = Config::get('application.aliases');
 
+/**
+ * Register the Laravel namespace so that the auto-loader loads it
+ * according to the PSR-0 naming conventions. This should provide
+ * fast resolution of all core classes.
+ */
+Autoloader::namespaces(array('Laravel' => path('sys')));
+
 /**
  * Register all of the bundles that are defined in the bundle info
  * file within the bundles directory. This informs the framework