Added support for time zones. Thanks Luke Plant for the review. Fixed #2626.

For more information on this project, see this thread:
http://groups.google.com/group/django-developers/browse_thread/thread/cf0423bbb85b1bbf



git-svn-id: http://code.djangoproject.com/svn/django/trunk@17106 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/utils/dateformat.py

@@ -4,6 +4,7 @@ import time
 
 from django.utils.dateformat import format
 from django.utils import dateformat, translation, unittest
+from django.utils.timezone import utc
 from django.utils.tzinfo import FixedOffset, LocalTimezone
 
 
@@ -56,7 +57,6 @@ class DateFormatTests(unittest.TestCase):
         self.assertEqual(datetime.fromtimestamp(int(format(dt, 'U')), ltz).utctimetuple(), dt.utctimetuple())
 
     def test_epoch(self):
-        utc = FixedOffset(0)
         udt = datetime(1970, 1, 1, tzinfo=utc)
         self.assertEqual(format(udt, 'U'), u'0')