Update Makefile.depend filesAfter building packages we have a number of newand updated Makefile.depend filesReviewed by: stevek
printenv: fix typo in a comment[skip ci]Reported by: gbeMFC with: c989957f28ef5b03f594265612e3437c1e826ed4Sponsored by: Axcient
printenv: Add test for printenv.Reviewed by: asomersDifferential Revision: https://reviews.freebsd.org/D41468