Changed strategy used to force evaluation of django.utils.translation in tests...

Changed strategy used to force evaluation of django.utils.translation in tests added in r15508 and r15513 to not use reload(). Thanks Alex for reporting it caused problems.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@15554 bcc190cf-cafb-0310-a4f2-bffc1f526a37