Changed list_detail.object_list generic view to use the new Paginator class....

Changed list_detail.object_list generic view to use the new Paginator class. This is backwards-compatible -- the previous 12 template context variables (has_next, has_previous, etc.) are still passed to the template, but new templates should only access the new template variables 'paginator' and 'page_obj'

git-svn-id: http://code.djangoproject.com/svn/django/trunk@7307 bcc190cf-cafb-0310-a4f2-bffc1f526a37