Added 'New in Django development version' note to docs/request_response.txt change from [6164]

git-svn-id: http://code.djangoproject.com/svn/django/trunk@6189 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/request_response.txt

@@ -162,6 +162,8 @@ Methods
    Example: ``"/music/bands/the_beatles/?print=true"``
 
 ``build_absolute_uri(location)``
+   **New in Django development version**
+
    Returns the absolute URI form of ``location``. If no location is provided,
    the location will be set to ``request.get_full_path()``.