If you're building your own PKGNG packages with ports-mgmt/poudriere or ports-mgmt/tinderbox rebuild everything from scratch, there's a big change in how the dependencies are handled. If you're using the official packages there's nothing you have to do now.
http://lists.freebsd.org/pipermail/freebsd-ports/2013-December/088731.html
This is a really good change, now a package will only depend on its immediate dependencies and dependencies are no longer copied recursively "down the tree".
http://lists.freebsd.org/pipermail/freebsd-ports/2013-December/088731.html
This is a really good change, now a package will only depend on its immediate dependencies and dependencies are no longer copied recursively "down the tree".