Fixed two scripts so that they also run when "set -u" is in effect.

mk/buildlink3/libtool-fix-la

@@ -1,4 +1,4 @@
-# $NetBSD: libtool-fix-la,v 1.7 2005/12/09 16:16:41 hira Exp $
+# $NetBSD: libtool-fix-la,v 1.8 2006/11/09 02:07:59 rillig Exp $
 #
 # Copyright (c) 2004 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -131,6 +131,7 @@ if $test -f $lafile; then
 		esac
 	done
 
+	: ${relink_command=""}
 	relink=
 	for i in ${relink_command}; do
 		case $i in

mk/buildlink3/transform-libtool

@@ -1,4 +1,4 @@
-# $NetBSD: transform-libtool,v 1.2 2004/10/03 21:39:07 jlam Exp $
+# $NetBSD: transform-libtool,v 1.3 2006/11/09 02:07:59 rillig Exp $
 #
 # Copyright (c) 2004 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -83,7 +83,7 @@ case $arg in
 		la="$dir/lib$lib.la"
 		if $test -f "$la"; then
 			ldir=`cd $dir; $pwd`
-			buildlibdir=`. $la; $echo $buildlibdir`
+			buildlibdir=`. $la; $echo ${buildlibdir-}`
 			if $test -n "$buildlibdir" -a \
 				 "$ldir" != "$buildlibdir"; then
 				la="$buildlibdir/lib$lib.la"
@@ -107,7 +107,7 @@ case $arg in
 	labase=`$basename $arg`
 	ladir=`$dirname $arg`
 	ldir=`cd $ladir; $pwd`
-	buildlibdir=`. $ladir/$labase; $echo $buildlibdir`
+	buildlibdir=`. $ladir/$labase; $echo ${buildlibdir-}`
 	if $test -n "$buildlibdir" -a "$ldir" != "$buildlibdir" -a \
 		 -e "$buildlibdir/$labase"; then
 		arg="$buildlibdir/$labase"