[1.7.0] Refactor HTMLModule unit tests

- AttrCollections does not barf when an inclusion is not present
- HTMLDefinition configuration directives now use new syntax
- Added %HTML.AllowedModules and %HTML.CoreModules for testing
- Extend Harness so that it can accept a default configuration object member variable
- Refactor modules to use Scaffolding, which defines some custom attributes that allows for the easy testing of attribute collections

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1082 48356398-32a2-884e-a903-53898d9a118a

tests/HTMLPurifier/AttrCollectionsTest.php

@@ -70,7 +70,7 @@ class HTMLPurifier_AttrCollectionsTest extends UnitTestCase
         $types = new HTMLPurifier_AttrTypesMock($this);
         $collections = new HTMLPurifier_AttrCollections($types, array());
         $collections->info = array(
-            'Core' => array(0 => array('Inclusion'), 'attr-original' => 'Type'),
+            'Core' => array(0 => array('Inclusion', 'Undefined'), 'attr-original' => 'Type'),
             'Inclusion' => array(0 => array('SubInclusion'), 'attr' => 'Type'),
             'SubInclusion' => array('attr2' => 'Type')
         );