[Debian-med-packaging] Bug#762102: W: dh_python2:433: public extension linked with libpython2.7: vtkDICOMPython.so

[David Gobbi]

CMake was automatically linking it because it was publicly linked to
libvtkPythonD.  The following patch should fix this:

https://github.com/dgobbi/vtk-dicom/commit/e849366b7286acbfeeb2a0e5ecac5010f1fe60d8