use toplevel ARFLAGS and update default ARFLAGS to be quiet
diff --git a/Rules.mak b/Rules.mak
index d04d4b9..6a2e17a 100644
--- a/Rules.mak
+++ b/Rules.mak
@@ -81,7 +81,7 @@
 
 WARNINGS=-Wall -Wstrict-prototypes -Wshadow
 CFLAGS=-I$(top_builddir)/include -I$(top_srcdir)/include -I$(srcdir)
-ARFLAGS=-r
+ARFLAGS=cru
 
 #--------------------------------------------------------
 export VERSION BUILDTIME TOPDIR HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP