Fixed #12932 -- Added an extra argument to suite_result() in the test runner, and added **kwargs as protection against future changes. Thanks to Eric Holscher for the report and patch.

This is BACKWARDS INCOMPATIBLE for anyone that has written a custom DjangoTestRunner class since it was introduced in r12255.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12487 bcc190cf-cafb-0310-a4f2-bffc1f526a37