Fixed select_driver(), cookie sess_destroy(), and native cookie name conflict
diff --git a/system/libraries/Session/drivers/Session_native.php b/system/libraries/Session/drivers/Session_native.php
index 04c9855..8ba8e74 100755
--- a/system/libraries/Session/drivers/Session_native.php
+++ b/system/libraries/Session/drivers/Session_native.php
@@ -56,7 +56,8 @@
 		// Set session name, if specified
 		if ($config['sess_cookie_name'])
 		{
-			$name = $config['sess_cookie_name'];
+			// Differentiate name from cookie driver with '_id' suffix
+			$name = $config['sess_cookie_name'].'_id';
 			if ($config['cookie_prefix'])
 			{
 				// Prepend cookie prefix