Add XFail test for Issue #2827 Handle mergeinfo for sparse directories.
Add XFail test for Issue #2827 Handle mergeinfo for sparse directories.

* subversion/tests/cmdline/merge_tests.py
  (merge_to_sparse_directories): New
  (test_list): Add merge_to_sparse_directories as XFail.

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