Corrected a bug in [7876] picked up by the buildbot: depending on the order in...

Corrected a bug in [7876] picked up by the buildbot: depending on the order in which tests are run, some tests would fail because of a dependency on the current working directory.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@7877 bcc190cf-cafb-0310-a4f2-bffc1f526a37