Minor Pcbnew Python scripting fix to expose SHAPE_POLY_SET interface

The recent refactoring work to move zones from CPolyLine to
SHAPE_POLY_SET resulted in a reduction in pcbnew's python
capabilities.  This change exposed SHAPE_POLY_SET to restore
that functionality (albeit with slightly different method names)

common/swig/kicad.i

@@ -2,7 +2,7 @@
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
  * Copyright (C) 2012 NBEE Embedded Systems, Miguel Angel Ajo <miguelangel@nbee.es>
- * Copyright (C) 1992-2012 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 1992-2017 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -130,6 +130,9 @@ principle should be easily implemented by adapting the current STL containers.
 #include <../polygon/PolyLine.h>
 %include <../polygon/PolyLine.h>
 
+#include <geometry/shape_poly_set.h>
+%include <geometry/shape_poly_set.h>
+
 // ignore warning relative to operator = and operator ++:
 #pragma SWIG nowarn=362,383
 

include/geometry/shape_poly_set.h

@@ -760,9 +760,6 @@ class SHAPE_POLY_SET : public SHAPE
         ///> For aFastMode meaning, see function booleanOp
         void Fracture( POLYGON_MODE aFastMode );
 
-        ///> Converts a set of slitted polygons to a set of polygons with holes
-        void Unfracture();
-
         ///> Returns true if the polygon set has any holes.
         bool HasHoles() const;