The "--special" and "--vtkobject" options were added to the wrapper tools
in VTK 5.8, and were only used by vtkWrapPython, because it was the only
tool that could wrap classes that were not derived from vtkObjectBase.
However, vtkWrapPython generally ignored these options and detected which
classes were VTK objects on a class-by-class basis, rather than on a
file-by-file basis.

Change-Id: Idf1cd340744b857400933465798cddb06133230a