- CHROMECAST option require devel/protobuf.
After this commit https://cgit.freebsd.org/ports/commit/?id=69e2e87fa56b54e267429b326f7f6188a7baaa71 consumers require USE_CXXSTD=c++17.
- There is default on configure option "skins2". It require QT5 and xext,xinerama,xpm - if they installed then it build bin/svlc and it is in stage after build.
Added option SKINS default off to handle bin/svlc.
Tested in poudriere and in live system.