Start working

Modified some paths to be more generic and not require rewrite.  Some
instances of phase names have been changed, others are still in process.

Twig/Node/Expression/ExtensionReference.php

@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents an extension call node.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Expression_ExtensionReference extends Twig_Node_Expression
+{
+    public function __construct($name, $lineno, $tag = null)
+    {
+        parent::__construct(array(), array('name' => $name), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler $compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler->raw(sprintf("\$this->env->getExtension('%s')", $this->getAttribute('name')));
+    }
+}