Extend the op-depth test framework with some helper code to verify which
conflicts are installed in a specific part of the working copy.

* subversion/tests/libsvn_wc/op-depth-test.c
  (includes): Add svn_hash.h.
  (conflict_info_t): New struct.
  (print_conflict,
   compare_conflict_info,
   check_db_conflicts): New functions.

  (update_prop_mod_into_moved,
   nested_move_update): Extend test with conflict verification.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1539032 13f79535-47bb-0310-9956-ffa450edef68