(Only the first 10 of 23 ports in this commit are shown above. )
Update libv4l and friends to 1.6.3.
Turn v4l-util and v4l_compat into slave ports.
"Steal" the dvb headers from linux 3.16.7 and roll them into a tarball.
Assign maintainership to multimedia@
Differential Revision: https://reviews.freebsd.org/D1482
Approved by: nox@, hslasky@, kwm@ (multimedia@)