[1.1.X] Fixed the files test to not care whether the names are reported as...

[1.1.X] Fixed the files test to not care whether the names are reported as bytestrings or unicode. Refs #12898. 

r12676 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@12677 bcc190cf-cafb-0310-a4f2-bffc1f526a37