MFC r306582:
"POSIX doesn't specify -h." - r1.27 from NetBSD
http://man.openbsd.org/?query=chmod&apropos=0&sec=0&arch=default&manpath=POSIX-2013

PR: 212337
Approved by: bcr (mentor)
Obtained from: NetBSD
Differential Revision: https://reviews.freebsd.org/D8118