In the move-update editor: detect and record tree-conflicts caused by unversioned items obstructing an add.
In the move-update editor: detect and record tree-conflicts caused
by unversioned items obstructing an add.

* subversion/libsvn_wc/wc_db_update_move.c:
  (mark_unversioned_add_conflict): New.
  (tc_editor_add_directory, tc_editor_add_file): Detect and record any
   unversioned conflict.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1425282 13f79535-47bb-0310-9956-ffa450edef68

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