Do not continue when a sub-make errors (bug #380953).

--- a/Makefile.in
+++ b/Makefile.in
@@ -55,11 +55,11 @@
 .PHONY: install installdirs all
 
 all: force
-	@-for d in $(DIRS);\
+	@for d in $(DIRS);\
 	do \
-		(cd $$d; echo "### Making in" `pwd`;\
-			$(MAKE) $(MFLAGS) ;\
-			echo "### Done with" `pwd`);\
+		echo "### Making in" $$d;\
+			$(MAKE) -C $$d $(MFLAGS) || exit 1;\
+		echo "### Done with" $$d;\
 	done
 
 install:  force