Cache file driver: clean() now preserves .htaccess and index files
diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
index f1f1a30..769bd5a 100644
--- a/system/libraries/Cache/drivers/Cache_file.php
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -133,7 +133,7 @@
 	 */
 	public function clean()
 	{
-		return delete_files($this->_cache_path);
+		return delete_files($this->_cache_path, FALSE, TRUE);
 	}
 
 	// ------------------------------------------------------------------------