ENH: Last of the reference counting changes. SetObjectMacro

common/vtkCoordinate.h

common/vtkDataSetAttributes.h

common/vtkImageCache.h

common/vtkImageToStructuredPoints.h

common/vtkImplicitFunction.h

common/vtkLocator.h

common/vtkObject.cxx

common/vtkPointSet.h

common/vtkProp2D.h

common/vtkRectilinearGrid.h

common/vtkSetGet.h

common/vtkViewport.cxx

contrib/vtkChairDisplay.cxx

contrib/vtkImageReslice.cxx

contrib/vtkImageReslice.h

contrib/vtkRenderLargeImage.h

graphics/examplesTcl/cells.tcl

graphics/vtkActor.cxx

graphics/vtkActor.h

graphics/vtkClipPolyData.cxx