On the fsx-id branch:  Replace the old and now unused svn_fs_x__dag_get_id
with svn_fs_x__dag_get_noderev_id.

* subversion/libsvn_fs_x/dag.h
  (svn_fs_x__dag_get_id): Remove.
  (svn_fs_x__dag_get_noderev_id): Rename to svn_fs_x__dag_get_id.

* subversion/libsvn_fs_x/dag.c
  (svn_fs_x__dag_get_id): Remove.
  (svn_fs_x__dag_get_noderev_id): Rename to svn_fs_x__dag_get_id.
  (svn_fs_x__dag_check_mutable): Update caller.

* subversion/libsvn_fs_x/tree.c
  (x_node_relation,
  (x_change_node_prop,
  (merge,
   x_make_dir,
   x_delete_node,
   copy_helper,
   x_make_file,
   apply_textdelta,
   apply_text,
   stringify_node,
   verify_node): Update caller.

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/fsx-id@1645862 13f79535-47bb-0310-9956-ffa450edef68