[2.0.1] Improve special case handling for <script>

- DirectLex now honors comments with greater than or less than signs in them
- Comments are transformed into script elements, ending comments are scrapped
- Buggy generator code rewritten to be more error-proof
- AttrValidator checks if token has attributes before processing
- Remove invalid documentation from Scripting
- "Commenting" of script elements switched to the more advanced version

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1189 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/HTMLModule/Scripting.php

@@ -5,14 +5,6 @@
 WARNING: THIS MODULE IS EXTREMELY DANGEROUS AS IT ENABLES INLINE SCRIPTING
 INSIDE HTML PURIFIER DOCUMENTS. USE ONLY WITH TRUSTED USER INPUT!!!
 
-Usage:
-
-require_once 'HTMLPurifier/HTMLModule/Scripting.php';
-$def =& $config->getHTMLDefinition(true); // get the raw version
-$def->manager->addModule('Scripting');
-
-This must come before any other calls to getHTMLDefinition()
-
 */
 
 /**
@@ -63,6 +55,7 @@ class HTMLPurifier_HTMLModule_Scripting extends HTMLPurifier_HTMLModule
         );
         $this->info['script']->content_model = '#PCDATA';
         $this->info['script']->content_model_type = 'optional';
+        $this->info['script']->attr_transform_pre['type'] =
         $this->info['script']->attr_transform_post['type'] =
             new HTMLPurifier_AttrTransform_ScriptRequired();
     }