Fix standalone liveconnect build to not complain about missing fdlibm when asked to clean or clobber.

Not part of the Mozilla build.

js/src/rules.mk

@@ -124,12 +124,11 @@ endif
 
 clean:
 	rm -rf $(OBJS)
-	cd fdlibm; $(MAKE) -f Makefile.ref clean
-
+	@cd fdlibm; $(MAKE) -f Makefile.ref clean
 
 clobber:
 	rm -rf $(OBJS) $(TARGETS) $(DEPENDENCIES)
-	cd fdlibm; $(MAKE) -f Makefile.ref clobber
+	@cd fdlibm; $(MAKE) -f Makefile.ref clobber
 
 depend:
 	gcc -MM $(CFLAGS) $(LIB_CFILES)