Refresh kohana from upstream svn trunk r3771.

During this process, remove a considerable number of files from kohana
that we will not be needing in Gallery3, including the following files
and directories:
    kohana/application
    kohana/example.htaccess
    kohana/index.php
    kohana/install.php
    kohana/kohana.png
    kohana/modules/archive
    kohana/modules/auth
    kohana/modules/flot
    kohana/modules/gmaps
    kohana/modules/kodoc
    kohana/modules/payment
    kohana/modules/smarty
    kohana/modules/unit_test/i18n
    kohana/modules/unit_test/tests/Example_Test.php
    kohana/modules/unit_test/tests/Valid_Test.php
    kohana/system/config/captcha.php
    kohana/system/controllers/captcha.php
    kohana/system/fonts
    kohana/system/i18n
    kohana/system/libraries/Calendar.php
    kohana/system/libraries/Calendar_Event.php
    kohana/system/libraries/Captcha.php
    kohana/system/libraries/Tagcloud.php
    kohana/system/vendor
    kohana/system/views/pagination
    kohana/system/views/kohana_calendar.php

1 files changed, 70 insertions, 0 deletions

diff --git a/kohana/libraries/drivers/Session.php b/kohana/libraries/drivers/Session.php
new file mode 100644
index 00000000..8dbfbc48
--- /dev/null
+++ b/kohana/libraries/drivers/Session.php
@@ -0,0 +1,70 @@
+<?php defined('SYSPATH') OR die('No direct access allowed.');
+/**
+ * Session driver interface
+ *
+ * $Id$
+ *
+ * @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
\ No newline at end of file