Move "ar" flags to config.mk to allow for silent "make -s"
Based on patch by Mike Frysinger, 20 Jun 2006
diff --git a/rtc/Makefile b/rtc/Makefile
index ca5b66b..cf2b24e 100644
--- a/rtc/Makefile
+++ b/rtc/Makefile
@@ -39,7 +39,7 @@
 all:	$(LIB)
 
 $(LIB):	$(obj).depend $(OBJS)
-	$(AR) crv $@ $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
 
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