Add more cases to a move-update test.

* subversion/tests/libsvn_wc/utils.h
* subversion/tests/libsvn_wc/utils.c
  (sbox_wc_switch): Add path and depth parameters.

* subversion/tests/libsvn_wc/op-depth-test.c
  (move_update_conflicts, switch_move, move_back): Adjust switch call.
  (move_update_subtree): Extend to test switch and bump.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1454408 13f79535-47bb-0310-9956-ffa450edef68