In the move-update handling: pass the baton as the right type.

* subversion/libsvn_wc/wc_db_update_move.c
  (tc_editor_baton): Rename to...
  (update_move_baton_t): ... this.

  (check_node_shadowed,
   check_tree_conflict,
   tc_editor_add_directory,
   tc_editor_add_file,
   tc_editor_alter_directory,
   tc_editor_alter_file,
   tc_editor_delete,
   update_moved_away_node,
   drive_tree_conflict_editor): Update baton variables. Remove unneeded casts.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1539143 13f79535-47bb-0310-9956-ffa450edef68