Fixed a corner case in management.setup_environ (it was triggered under...

Fixed a corner case in management.setup_environ (it was triggered under Cygwin, but also perhaps could happen elsewhere). Thanks, Doug Napoleone.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@7316 bcc190cf-cafb-0310-a4f2-bffc1f526a37