[2.1.0] Implement Ruby.

- Destroy some zombie context variables
- Reorganize some TODO items

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1347 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/Strategy/ValidateAttributes.php

@@ -46,6 +46,7 @@ class HTMLPurifier_Strategy_ValidateAttributes extends HTMLPurifier_Strategy
         }
         
         $context->destroy('IDAccumulator');
+        $context->destroy('CurrentToken');
         
         return $tokens;
     }