use Bx macro for BSD versions

src/lib/libc/stdlib/getsubopt.3

@@ -1,4 +1,4 @@
-.\" $OpenBSD: getsubopt.3,v 1.1 1997/08/20 04:02:17 millert Exp $
+.\" $OpenBSD: getsubopt.3,v 1.2 1998/06/15 17:55:07 mickey Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -144,4 +144,5 @@ while ((ch = getopt(argc, argv, "ab:")) != \-1) {
 .Sh HISTORY
 The
 .Fn getsubopt
-function first appeared in 4.4BSD.
+function first appeared in
+.Bx 4.4 .

src/lib/libc/stdlib/radixsort.3

@@ -29,7 +29,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"	$OpenBSD: radixsort.3,v 1.3 1997/01/19 19:47:01 millert Exp $
+.\"	$OpenBSD: radixsort.3,v 1.4 1998/06/15 17:55:08 mickey Exp $
 .\"
 .Dd January 27, 1994
 .Dt RADIXSORT 3
@@ -157,4 +157,5 @@ for any of the errors specified for the library routine
 .Sh HISTORY
 The
 .Fn radixsort
-function first appeared in 4.4BSD.
+function first appeared in
+.Bx 4.4 .

src/lib/libc/string/memccpy.3

@@ -1,4 +1,4 @@
-.\" $OpenBSD: memccpy.3,v 1.3 1997/08/20 04:09:39 millert Exp $
+.\" $OpenBSD: memccpy.3,v 1.4 1998/06/15 17:55:09 mickey Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -71,4 +71,5 @@ bytes are copied, and a NULL pointer is returned.
 .Sh HISTORY
 The
 .Fn memccpy
-function first appeared in 4.4BSD.
+function first appeared in
+.Bx 4.4 .

src/lib/libc/string/strcasecmp.3

@@ -1,4 +1,4 @@
-.\" $OpenBSD: strcasecmp.3,v 1.3 1997/08/20 04:13:56 millert Exp $
+.\" $OpenBSD: strcasecmp.3,v 1.4 1998/06/15 17:55:11 mickey Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -85,4 +85,5 @@ The
 .Fn strcasecmp
 and
 .Fn strncasecmp
-functions first appeared in 4.4BSD.
+functions first appeared in
+.Bx 4.4 .

src/lib/libc/string/strdup.3

@@ -1,4 +1,4 @@
-.\" $OpenBSD: strdup.3,v 1.4 1997/08/20 04:18:51 millert Exp $
+.\" $OpenBSD: strdup.3,v 1.5 1998/06/15 17:55:12 mickey Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -64,4 +64,5 @@ If insufficient memory is available, NULL is returned.
 .Sh HISTORY
 The
 .Fn strdup
-function first appeared in 4.4BSD.
+function first appeared in
+.Bx 4.4 .

src/lib/libc/string/strmode.3

@@ -1,4 +1,4 @@
-.\" $OpenBSD: strmode.3,v 1.5 1998/05/04 02:00:05 deraadt Exp $
+.\" $OpenBSD: strmode.3,v 1.6 1998/06/15 17:55:13 mickey Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -148,4 +148,5 @@ always returns 0.
 .Sh HISTORY
 The
 .Fn strmode
-function first appeared in 4.4BSD.
+function first appeared in
+.Bx 4.4 .

src/lib/libc/string/strsep.3

@@ -1,4 +1,4 @@
-.\" $OpenBSD: strsep.3,v 1.3 1997/08/20 04:28:13 millert Exp $
+.\" $OpenBSD: strsep.3,v 1.4 1998/06/15 17:55:14 mickey Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -106,4 +106,5 @@ two adjacent delimiter characters, or to be used for more than a single
 string at a time.
 The
 .Fn strsep
-function first appeared in 4.4BSD.
+function first appeared in
+.Bx 4.4 .