Include script filename in script_url variable.

This avoids issues with sending DELETE requests to the script directory.

Author: blueimp

server/php/UploadHandler.php

@@ -1,6 +1,6 @@
 <?php
 /*
- * jQuery File Upload Plugin PHP Class 8.3.2
+ * jQuery File Upload Plugin PHP Class 8.3.3
  * https://github.com/blueimp/jQuery-File-Upload
  *
  * Copyright 2010, Sebastian Tschan
@@ -43,7 +43,7 @@ class UploadHandler
     function __construct($options = null, $initialize = true, $error_messages = null) {
         $this->response = array();
         $this->options = array(
-            'script_url' => $this->get_full_url().'/',
+            'script_url' => $this->get_full_url().'/'.basename($this->get_server_var('SCRIPT_NAME')),
             'upload_dir' => dirname($this->get_server_var('SCRIPT_FILENAME')).'/files/',
             'upload_url' => $this->get_full_url().'/files/',
             'user_dirs' => false,