Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.Approved by: re (implicit)Sponsored by: The FreeBSD Foundation
For variables that are only checked with defined(), don't provideany fake value.
Upgrade to Groff 1.19.
Removed now unused INTERNALSTATICLIB.INTERNALLIB now implies NOPIC and NOPROFILE.Removed gratuitous NOMAN.
Upgrade to Groff 1.17.