[v9_9] work around libtool issue

- revert d3617e0d
- use -Xcompiler option to libtool so it won't suppress -shared
- regenerate configure

Conflicts:
	bin/tests/system/dlzexternal/Makefile.in

configure

@@ -19623,7 +19623,11 @@ if test "$dlopen" = "yes"; then
 			SO_CFLAGS="-fPIC"
 			if test "$have_dl" = "yes"
 			then
+				if test "$use_libtool" = "yes"; then
+					SO_LD="${CC} -Xcompiler -shared"
+				else
 					SO_LD="${CC} -shared"
+				fi
 			else
 				SO_LD="ld -shared"
 			fi

configure.in

@@ -3394,7 +3394,11 @@ if test "$dlopen" = "yes"; then
 			SO_CFLAGS="-fPIC"
 			if test "$have_dl" = "yes"
 			then
+				if test "$use_libtool" = "yes"; then
+					SO_LD="${CC} -Xcompiler -shared"
+				else
 					SO_LD="${CC} -shared"
+				fi
 			else
 				SO_LD="ld -shared"
 			fi