[vtkusers] vtk 8.2.rc2 and python 3.7.1 install weirdness

[Kurt Sansom]

Hi all,
I am trying to build vmtk which builds ITK and VTK. I was able to get it
to all compile, but the python wrappers are getting installed in
${CMAKE_INSTALL_PREFIX}/lib/lib/python3.7/site-packages/vtkmodules

instead of
${CMAKE_INSTALL_PREFIX}/lib/python3.7/site-packages/vtkmodules

can someone help identify where the build is adding the additional /lib?

Regards,
~Kurt