[src/trunk]: src/usr.bin/gcore use macro for OS name when first introduced

[reed <reed%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/184aa3f0f595
branches:  trunk
changeset: 792896:184aa3f0f595
user:      reed <reed%NetBSD.org@localhost>
date:      Tue Jan 21 02:53:30 2014 +0000

description:
use macro for OS name when first introduced

diffstat:

 usr.bin/gcore/gcore.1 |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (20 lines):

diff -r 6d8976701b5a -r 184aa3f0f595 usr.bin/gcore/gcore.1
--- a/usr.bin/gcore/gcore.1     Tue Jan 21 00:36:11 2014 +0000
+++ b/usr.bin/gcore/gcore.1     Tue Jan 21 02:53:30 2014 +0000
@@ -1,4 +1,4 @@
-.\"     $NetBSD: gcore.1,v 1.14 2012/03/22 07:58:19 wiz Exp $
+.\"     $NetBSD: gcore.1,v 1.15 2014/01/21 02:53:30 reed Exp $
 .\"
 .\" Copyright (c) 2003 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -66,7 +66,9 @@
 .Xr sysctl 8
 .Sh HISTORY
 .Nm
-appeared in BSD 4.2, disappeared in
+appeared in
+.Bx 4.2 ,
+disappeared in
 .Nx 1.2 ,
 and reappeared in
 .Nx 2.0 .