Merge topic 'cpack-freebsd-pkg'

c3715e08e4 FreeBSD: tidy up
a76f19d5e8 FreeBSD: handle new package-file-suffix
d5ae2f9754 FreeBSD: fix up the package name
0ac1ac798e FreeBSD: migrate to newer pkg_create(3) API

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Semphriss <dev.semphris@gmail.com>
Merge-request: !5854