Store NULL rather than 0 when not setting NODES.moved_here TRUE.

* subversion/libsvn_wc/wc_db.c
  (insert_working_node, db_op_copy_shadowed_layer): Only bind
   moved_here if set.

* subversion/libsvn_wc/wc-queries.sql
  (STMT_INSERT_WORKING_NODE_COPY_FROM_DEPTH): Reorder parameters to
   make moved_here the last.

* subversion/tests/libsvn_wc/db-test.c
  (TESTING_DATA): Use NULL rather than 0.

* subversion/tests/libsvn_wc/entries-compat.c
  (TESTING_DATA): Use NULL rather than 0.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1451549 13f79535-47bb-0310-9956-ffa450edef68