Should anybody feel like they could be the maintainer for any of thewe packages, please adjust.
extension Makefile fragments, because they really don't have anything to do with the buildlink[12] frameworks. Change all the Makefiles that use application.buildlink.mk and extension.buildlink.mk to use application.mk and extension.mk instead.
HTML documents such a pkg was submitted in PR pkg/13042, but the URL it refers to is invalid