Build a working version of sort(1) from contrib. Use netbsd.h as a hack

to avoid bringing the sources off the vendor branch just to #ifdef out
the RCS and SCCS IDs.

usr.bin/sort/Makefile

@@ -1,7 +1,12 @@
-#	$NetBSD: Makefile,v 1.3 2001/01/08 19:16:49 jdolecek Exp $
-#	from: @(#)Makefile	8.1 (Berkeley) 6/6/93
+#	$FreeBSD$
+
+SRCDIR=	${.CURDIR}/../../contrib/sort
 
 PROG=	sort
 SRCS=	append.c fields.c files.c fsort.c init.c msort.c sort.c tmp.c
+MAN=	sort.1
+CFLAGS+=-I${SRCDIR} -include ${.CURDIR}/netbsd.h
 
 .include <bsd.prog.mk>
+
+.PATH:	${SRCDIR}

usr.bin/sort/netbsd.h

@@ -0,0 +1,4 @@
+/* $FreeBSD$ */
+
+#define __RCSID(x) /* nothing */
+#define __SCCSID(x) /* nothing */