[vtkusers] triangle - triangle intersection VTK C++

[David Thompson]

> ...
> Would anybody be opposed to me changing the method name vtkIntersectionPolyDataFilter::TriangleTriangleIntersection() to better reflect the fact that it is not entirely general?

+1  but only if you use the VTK_LEGACY macros so people maintaining external apps have a chance to update.

    David