Fix a compile error with Paraview.  Subclasses of the templated
vtkSIVectorPropertyTemplate class failed to wrap, due to expansion
of the vtkSIVectorProperty macro.  For now, I've disabled expansion
of macros that aren't function-like macros.

Change-Id: Iaf19efa2e31c823f4f3d2a82c7be00b43b44679b