[3.1.0] Further cleanup, making standalone work again

- Remove includes call in HTMLPurifier.auto.php
- Relax ConfigSchema treatment in generate-includes.php
- Clean up some empty comments (there are probably more)
- De-indent some extends
- class_exists() should now attempt to use autoload
- schema.ser is now a standalone file
- tests/index.php can be run from any directory

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1540 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/HTMLModule/Tidy/Strict.php

@@ -0,0 +1,19 @@
+<?php
+
+class HTMLPurifier_HTMLModule_Tidy_Strict extends HTMLPurifier_HTMLModule_Tidy_XHTMLAndHTML4
+{
+    public $name = 'Tidy_Strict';
+    public $defaultLevel = 'light';
+    
+    public function makeFixes() {
+        $r = parent::makeFixes();
+        $r['blockquote#content_model_type'] = 'strictblockquote';
+        return $r;
+    }
+    
+    public $defines_child_def = true;
+    public function getChildDef($def) {
+        if ($def->content_model_type != 'strictblockquote') return parent::getChildDef($def);
+        return new HTMLPurifier_ChildDef_StrictBlockquote($def->content_model);
+    }
+}