intl: turn LIBINTL into -L / -l form

This variable currently refers directly, not to a .la file, but to an .a
file.  This produces wrong results when building into a library on some
platforms: so convert it to the general form "-L${top_builddir}../intl
-lintl ..." ... so that both libtool and non-libtool builds will always
do the right thing for both static and shared links.

intl/ChangeLog
2021-02-04  Nick Alcock  <nick.alcock@oracle.com>

	* configure.ac (LIBINTL): Transform into -L/-lintl form.
	* configure: Regenerate.

intl/ChangeLog

@@ -1,3 +1,8 @@
+2021-02-04  Nick Alcock  <nick.alcock@oracle.com>
+
+	* configure.ac (LIBINTL): Transform into -L/-lintl form.
+	* configure: Regenerate.
+
 2021-02-02  Nick Alcock  <nick.alcock@oracle.com>
 
 	* aclocal.m4: include picflag.m4.

intl/configure

@@ -6787,8 +6787,7 @@ LIBINTL_DEP=
 INCINTL=
 case $USE_INCLUDED_LIBINTL in
   yes)
-    LIBINTL=`echo $LIBINTL | sed 's,${top_builddir},&/..,' `
-    LTLIBINTL=`echo $LTLIBINTL | sed 's,${top_builddir},&/..,' `
+    LIBINTL=`echo $LIBINTL | sed 's,${top_builddir},-L&/..,; s,\.\./intl/libintl\.a,../intl -lintl,' `
     LIBINTL_DEP='${top_builddir}/../intl/libintl.a'
     INCINTL='-I${top_builddir}/../intl'
     ;;

intl/configure.ac

@@ -40,8 +40,7 @@ LIBINTL_DEP=
 INCINTL=
 case $USE_INCLUDED_LIBINTL in
   yes)
-    LIBINTL=`echo $LIBINTL | sed 's,${top_builddir},&/..,' `
-    LTLIBINTL=`echo $LTLIBINTL | sed 's,${top_builddir},&/..,' `
+    LIBINTL=`echo $LIBINTL | sed 's,${top_builddir},-L&/..,; s,\.\./intl/libintl\.a,../intl -lintl,' `
     LIBINTL_DEP='${top_builddir}/../intl/libintl.a'
     INCINTL='-I${top_builddir}/../intl'
     ;;