BUG14463 vtkMy does not work for vtk6

The vtkMy example was never upgraded to vtk6. This patch also
modernized the CMakeLists.txt files.

Change-Id: I357a0b79c771ddd7f0c1789eda2a4ad2a0f72cd2
Merge topic 'Bug14463' into master

28abc76a BUG14463 vtkMy does not work for vtk6