python-pivy-0.6.2-bp150.2.3

- Fix build failure when using more than one python version:
  swig wrapper files were only generated the first time and
  and then kept for subsequent builds.

- Convert specfile to python-singlespec: fixes build failures in
  Factory. Doesn't build against python2 for unknown reasons, so
  turn off python2 modules until this is fixed.
- Use fdupes (added to BuildRequires) to link duplicate files.

- update to 0.6.2
  * builds for python3 (linux: 3.4, 3.5, 3.6; win: 3.5, 3.6)
    or python2 (2.7)
  * uses pyside instead of pyqt for soqt4 bindings
  * has many fixes (especially for FreeCAD)
- switch to github.com/FreeCAD/pivy, coin3d.org is dead

- Initial release (version 0.5.0hg.609).