Added ability to contain Vertex objects within the Cam::Paths class so that point data could be used for drilling.

Added the 'input_geometry' argument to the RPG::run() method.  This is a QStringList which contains a list of objects by name.  These names can be passed directly into the Cam::Paths class.  It looks at each name in turn and, if it's derived from the Part::Feature class, its corresponding TopoDS_Shape is added.

Commented out the cut/paste Python routine from CppExampleTPG.cpp file as it's served its purpose already.