vtkSubdivideTetra does not merge points generated on edges
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
vtkSubdivideTetra uses the vtkMergePoints class, but uses it incorrectly.
All new points are added via: edgePointIndex = locator->InsertNextPoint(edgeCenter);
Instead these points should be added using InsertUniquePoint(x) to avoid adding the same point (x,y,z) multiple times.