[3.1.0] Landed modified patch by Braden Anderson for %CSS.AllowedProperties

- Fix broken ConfigSchema build, as well as broken aliases
- Remove another advisory property from runtime ConfigSchema classes
- Reorder flush script to more accurately reflect dependencies
- Remove some aliases from unit tests

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1635 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/ConfigDef/Directive.php

@@ -51,11 +51,5 @@ class HTMLPurifier_ConfigDef_Directive extends HTMLPurifier_ConfigDef
      */
     public $aliases = array();
     
-    /**
-     * Advisory list of directive aliases, i.e. other directives that
-     * redirect here
-     */
-    public $directiveAliases = array();
-    
 }