slice3dVWR is now sensitive to object changes on existing inputs for polydata and volume objects.  We still have to do this for imagedatas.
slice3dVWR is now sensitive to object changes on existing inputs for
polydata and volume objects.  We still have to do this for imagedatas.

ivoflipse/devide,chrisidefix/devide,fvpolpeta/devide,zhangfangyan/devide,ivoflipse/devide,chrisidefix/devide,fvpolpeta/devide,nagyistoce/devide,nagyistoce/devide,zhangfangyan/devide