In the conflict resolver, improve descriptions for local obstructions again.
In the conflict resolver, improve descriptions for local obstructions again.

* subversion/libsvn_client/conflicts.c
  (describe_local_file_node_change,
   describe_local_dir_node_change,
   describe_local_none_node_change): Obstructions are always in the way of
    something else which wants to occupy a path. So we can state that the
    obstructing item "already" occupies the path.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1736344 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion