[vtkusers] Building and Installing Python Wrappers

[Brad King]

> Are the VTK Python Wrappers built using Cable or hand crafted?

Neither.  They are generated by a small tool that comes with VTK.  It is
built along with the rest of VTK when wrapping is on.  All you need is to
have python installed before you run CMake to build VTK.  Then you can
turn on the VTK_WRAP_PYTHON option to get python wrappers.

-Brad