[3.1.0] De-crudify the ConfigSchema space; we're starting over again

- Optimize ConfigSchema by removing non-essential runtime data. We can probably optimize even more by collapsing object structures to arrays.
- Removed validation data from ConfigSchema; this will be reimplemented on Interchange
- Implement a sane Interchange composite hierarchy that doesn't use arrays
- Implement StringHash -> Interchange -> ConfigSchema, and rewrite maintenance file to account for this

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1615 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/ConfigDef/Namespace.php

@@ -3,18 +3,8 @@
 /**
  * Structure object describing of a namespace
  */
-class HTMLPurifier_ConfigDef_Namespace extends HTMLPurifier_ConfigDef {
-    
-    public function HTMLPurifier_ConfigDef_Namespace($description = null) {
-        $this->description = $description;
-    }
-    
+class HTMLPurifier_ConfigDef_Namespace extends HTMLPurifier_ConfigDef
+{
     public $class = 'namespace';
-    
-    /**
-     * String description of what kinds of directives go in this namespace.
-     */
-    public $description;
-    
 }