PartDesign changes

* Mostly for supporting in-place editing

* Add new SubShapeBinder that support cross coordinate system,
  external, and sub-object binding

src/Mod/PartDesign/App/AppPartDesign.cpp

@@ -117,6 +117,7 @@ PyMOD_INIT_FUNC(_PartDesign)
     PartDesign::AdditiveLoft                ::init();
     PartDesign::SubtractiveLoft             ::init();
     PartDesign::ShapeBinder                 ::init();
+    PartDesign::SubShapeBinder              ::init();
     PartDesign::Plane                       ::init();
     PartDesign::Line                        ::init();
     PartDesign::Point                       ::init();