o .Os args removal
o .Bx, .Nx, and .Bsx use
o .Pq, Po, Pc to ( and ) replacement
.Ex related changes are not reflected, since ja-groff-1.17.2 does not
support it yet. After it .Ex is supported, remaining changes can be
incorporated.
jpman project specific RCS keyword (jpman %Id) is obsolete,
after manual entries are stored in freefall CVS repository.
This old Id is useless and more worse it confuses users and bug reporters.
So, this old Id is removed.
Submitted by:jpman project <man-jp@jp.FreeBSD.org>