NVtree in C and C++

Hello,

I needed C and C++ library that can communicate with nvlist but expose 
the values as a tree, so I implemented 
https://github.com/mekanix/freebsd-src/tree/libnvtree which is currently 
in "works for me" stage. My initial need was to communicate with 
/dev/sndstat but I can see others can benefit from this library. Would 
there be any interest in including nvtree in base? If yes, I would 
gladly work on making it work and look good before sending it for review.

Regards,
meka