Following up on r1544597, add another test that covers a similar case that
shows that the moved_to detection code for the root of status appears to
work when a completely unrelated BASE node exists.

The only problem is that it shows moves from different layers than when the
node is not the root of the status walk.

* cmdline/stat_tests.py
  (status_move_missing_direct_base): New function.
  (test_list): Add status_move_missing_direct_base.

git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1544688 13f79535-47bb-0310-9956-ffa450edef68