Update inkscape to 0.92.0.
ChangeLog: https://inkscape.org/en/news/2017/01/04/inkscape-version-092-released/
- Switch to cmake build system
- Add license
- Record indirect dependancies
- Switch to lcms2, which is prefered over lcms (1).
- Add stub for NLS support, currently not enabled since it breaks the build. Reported upstream.
- Remove the OPENMP option, it does not build anymore.