Deprecated SupervoxelClustering getter functions for rgb clouds. Now use the label field handlers from #849 , deprecated functions return empty cloud to deprecated functions to avoid warnings

Changed labeled color handler to use modulo max color instead of using random colors
Merge pull request #941 from jpapon/supervoxel_coloring_update

Supervoxel coloring update
explicitly include vtkVersion module&macros

Otherwise VTK_MAJOR_VERSION is not defined if
VTK was built with VTK_LEGACY_REMOVE=1.
Merge pull request #943 from v4hn/vtk-version-include

explicitly include vtkVersion module&macros
Cache whether an update performs a shift, and expose a method to determine after an update if a shift occurred.
Merge pull request #944 from mbarriault/master

Cache whether an update performs a shift, and expose a method to determi...