Add regression test following the replace pattern as described in recent
e-mail to users list.

* subversion/tests/libsvn_wc/op-depth-test.c
  (move_replace_ancestor_with_child): New function.
  (test_funcs): Add new function.

The failing pattern was
Found by: Casual Trash <casualtrash{_AT_}hotmail.com>
but he reported quite a different error.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1536350 13f79535-47bb-0310-9956-ffa450edef68