Make directories unbrowsable.

class/deliver/index.php

@@ -0,0 +1,3 @@
+<?php
+header('Location: ../index.php');
+?>

class/mime/index.php

@@ -0,0 +1,3 @@
+<?php
+header('Location: ../index.php');
+?>

include/index.php

@@ -0,0 +1,3 @@
+<?php
+header('Location: ../index.php');
+?>