Fixed #9002 -- Added a RequestFactory. This allows you to create request instances so you can unit test views as standalone functions. Thanks to Simon Willison for the suggestion and snippet on which this patch was originally based.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14191 bcc190cf-cafb-0310-a4f2-bffc1f526a37