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, 40 insertions, 0 deletions

diff --git a/kohana/libraries/drivers/Cache.php b/kohana/libraries/drivers/Cache.php
new file mode 100644
index 00000000..0e825bcf
--- /dev/null
+++ b/kohana/libraries/drivers/Cache.php
@@ -0,0 +1,40 @@
+<?php defined('SYSPATH') OR die('No direct access allowed.');
+/**
+ * Cache driver interface.
+ *
+ * $Id$
+ *
+ * @package    Cache
+ * @author     Kohana Team
+ * @copyright  (c) 2007-2008 Kohana Team
+ * @license    http://kohanaphp.com/license.html
+ */
+interface Cache_Driver {
+
+	/**
+	 * Set a cache item.
+	 */
+	public function set($id, $data, $tags, $lifetime);
+
+	/**
+	 * Find all of the cache ids for a given tag.
+	 */
+	public function find($tag);
+
+	/**
+	 * Get a cache item.
+	 * Return NULL if the cache item is not found.
+	 */
+	public function get($id);
+
+	/**
+	 * Delete cache items by id or tag.
+	 */
+	public function delete($id, $tag = FALSE);
+
+	/**
+	 * Deletes all expired cache items.
+	 */
+	public function delete_expired();
+
+} // End Cache Driver
\ No newline at end of file