Have freebsd port use pkg info if the freebsd version is >= 10000017
Remove unnecessary version check in freebsd port and package tests.
Move supports_with_pkgng? check to the freebsd_package package.
Merge pull request #1907 from Aevin1387/freebsd-port-pkgng

Have freebsd port use pkg info if the freebsd version is >= 10000017