When doing 'update' and 'diff', use our cvs(1)'s -R feature, this would accelerate

on certain configurations.

While I'm there, make use of 'SF' macro for SourceForge mirror.

PR:	ports/116248

ports-mgmt/porttools/Makefile

@@ -7,9 +7,9 @@
 
 PORTNAME=	porttools
 PORTVERSION=	0.77
+PORTREVISION=	1
 CATEGORIES=	ports-mgmt
-MASTER_SITES=	${MASTER_SITE_SOURCEFORGE}
-MASTER_SITE_SUBDIR=	${PORTNAME}
+MASTER_SITES=	SF
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Tools for testing and submitting port updates and new ports

ports-mgmt/porttools/files/patch-util_diff.in

@@ -0,0 +1,20 @@
+--- ./util_diff.in.orig	2006-05-06 19:31:58.000000000 +0800
++++ ./util_diff.in	2007-09-10 11:14:41.199138345 +0800
+@@ -54,7 +54,7 @@
+ 
+ 		# Run 'cvs update' first
+ 		echo "===> Updating from CVS"
+-		cvs update -Pd
++		cvs -R update -Pd
+ 		if [ $? -ne 0 ]
+ 		then
+ 			echo "Error updating CVS"
+@@ -62,7 +62,7 @@
+ 			exit 1
+ 		fi
+ 
+-		DIFF_CMD="cvs diff -uN"
++		DIFF_CMD="cvs -R diff -uN"
+ 	else 
+ 		# Non-CVS modes
+ 		if [ -d ${DIFF_MODE} ]