Changed setUp and tearDown for the tests converted from doctests in r11695 to not assume TZ absolutely will be set in the environment.  That environment variable does not necessarily exist on Windows, it seems.
Changed setUp and tearDown for the tests converted from doctests in r11695
to not assume TZ absolutely will be set in the environment.  That environment
variable does not necessarily exist on Windows, it seems.

--HG--
extra : convert_revision : svn%3Abcc190cf-cafb-0310-a4f2-bffc1f526a37/django/trunk%4011699

adieu/django-nonrel,adieu/django-nonrel,adieu/django-nonrel