Add XFAIL test for issue 3983, import into foreign repo.
Add XFAIL test for issue 3983, import into foreign repo.

* subversion/tests/cmdline/import_tests.py
  (import_into_foreign_repo): New test.
  (test_list): Add new test.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion