[1.7.0] Fix bug in Bool class

- Genericize allElements into basic smoketest, add beginnings of legacy smoketest too.

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1113 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/AttrDef/HTML/Bool.php

@@ -15,7 +15,7 @@ class HTMLPurifier_AttrDef_HTML_Bool extends HTMLPurifier_AttrDef
     
     function validate($string, $config, &$context) {
         if (empty($string)) return false;
-        return $name;
+        return $this->name;
     }
     
     /**