Rename 'kohana' to 'system' to conform to the Kohana filesystem layout. I'm comfortable with us not clearly drawing the distinction about the fact that it's Kohana.

Signed-off-by: Gallery Role Account <gallery@menalto.com>

system/libraries/drivers/Session.php

@@ -0,0 +1,70 @@
+<?php defined('SYSPATH') OR die('No direct access allowed.');
+/**
+ * Session driver interface
+ *
+ * $Id: Session.php 3769 2008-12-15 00:48:56Z zombor $
+ *
+ * @package    Core
+ * @author     Kohana Team
+ * @copyright  (c) 2007-2008 Kohana Team
+ * @license    http://kohanaphp.com/license.html
+ */
+interface Session_Driver {
+
+	/**
+	 * Opens a session.
+	 *
+	 * @param   string   save path
+	 * @param   string   session name
+	 * @return  boolean
+	 */
+	public function open($path, $name);
+
+	/**
+	 * Closes a session.
+	 *
+	 * @return  boolean
+	 */
+	public function close();
+
+	/**
+	 * Reads a session.
+	 *
+	 * @param   string  session id
+	 * @return  string
+	 */
+	public function read($id);
+
+	/**
+	 * Writes a session.
+	 *
+	 * @param   string   session id
+	 * @param   string   session data
+	 * @return  boolean
+	 */
+	public function write($id, $data);
+
+	/**
+	 * Destroys a session.
+	 *
+	 * @param   string   session id
+	 * @return  boolean
+	 */
+	public function destroy($id);
+
+	/**
+	 * Regenerates the session id.
+	 *
+	 * @return  string
+	 */
+	public function regenerate();
+
+	/**
+	 * Garbage collection.
+	 *
+	 * @param   integer  session expiration period
+	 * @return  boolean
+	 */
+	public function gc($maxlifetime);
+
+} // End Session Driver Interface