With the impending removal of rcs from base/head/, add new rcs 5.7 port

which is compatible with the soon to be removed rcs (5.7) in base/ and make
security/fwbuilder (which will not work with any rcs newer than 5.7)
depend on it.

devel/Makefile

@@ -3948,6 +3948,7 @@
     SUBDIR += rbtools
     SUBDIR += rclint
     SUBDIR += rcs
+    SUBDIR += rcs57
     SUBDIR += re2
     SUBDIR += re2c
     SUBDIR += readline

devel/rcs57/Makefile

@@ -0,0 +1,22 @@
+# $FreeBSD$
+
+PORTNAME=	rcs
+PORTVERSION=	5.7
+CATEGORIES=	devel
+MASTER_SITES=	${MASTER_SITE_GNU}
+MASTER_SITE_SUBDIR=	${PORTNAME}
+
+MAINTAINER=	cy@FreeBSD.org
+COMMENT=	Version control system (as was in FreeBSD prior to removal)
+
+CONFLICTS=	rcs-5.[89]*
+LICENSE=	GPLv2
+
+GNU_CONFIGURE=	yes
+USE_GMAKE=	yes
+
+MAN1=	ci.1 co.1 ident.1 merge.1 rcs.1 rcsclean.1 rcsdiff.1 rcsmerge.1 rlog.1
+MAN5=	rcsfile.5
+
+NO_STAGE=	yes
+.include <bsd.port.mk>

devel/rcs57/distinfo

@@ -0,0 +1,2 @@
+SHA256 (rcs-5.7.tar.gz) = 97b50630e308320ea91e2a4f35f648d5e95e1de121ff64d2f19b571c512169e4
+SIZE (rcs-5.7.tar.gz) = 282413

devel/rcs57/files/patch-src-conf.sh

@@ -0,0 +1,20 @@
+--- src/conf.sh.orig	1995-06-15 23:19:24.000000000 -0700
++++ src/conf.sh	2013-10-05 20:29:37.323219649 -0700
+@@ -73,17 +73,6 @@
+ 	ech='echo -n' dots='... '
+ esac
+ 
+-$ech >&3 "$0: testing permissions $dots"
+-rm -f a.d &&
+-date >a.d &&
+-chmod 0 a.d &&
+-{ test -w a.d || cp /dev/null a.d 2>/dev/null; } && {
+-	echo >&3 "$n$0: This command should not be run with superuser permissions."
+-	exit 1
+-}
+-echo >&3 OK
+-rm -f a.d || exit
+-
+ $ech >&3 "$0: testing compiler for plausibility $dots"
+ echo 'main() { return 0; }' >a.c
+ rm -f a.exe a.out || exit

devel/rcs57/pkg-descr

@@ -0,0 +1,11 @@
+The Revision Control System (RCS) manages multiple revisions of files.  RCS
+automates the storing, retrieval, logging, identification, and merging of
+revisions.  RCS is useful for text that is revised frequently, including source
+code, programs, documentation, graphics, papers, and form letters.
+
+This port is gnu rcs 5.7. It is compatible with the rcs that was in FreeBSD
+prior to its removal in FreeBSD-10.0. Some ports will not work with changes
+made to rcs (e.g. changes to command line syntax) following the rcs 5.7
+release.
+
+WWW: http://www.gnu.org/software/rcs/

devel/rcs57/pkg-plist

@@ -0,0 +1,9 @@
+bin/ci
+bin/co
+bin/ident
+bin/merge
+bin/rcs
+bin/rcsclean
+bin/rcsdiff
+bin/rcsmerge
+bin/rlog

security/fwbuilder/Makefile

@@ -79,6 +79,11 @@ NO_STAGE=	yes
 MAKE_ENV+=	CCACHE_DISABLE=yes
 .endif
 
+.if  ${OSVERSION} >= 1000055
+# IMPORTANT: Newer versions of rcs will NOT work with fwbuilder.
+RUN_DEPENDS=	rcs:${PORTSDIR}/devel/rcs57
+.endif
+
 post-install:
 	@${STRIP_CMD} ${PREFIX}/bin/fwbuilder
 	@${ECHO} If you are upgrading from a previous version of fwbuilder,