[make] silent ar compiler warnings

mkortstiege · mkortstiege · commit 8554b21810c1 · 2015-10-29T08:29:51.000+01:00
In recent gnu binutils the ar binary operates in deterministic mode
by default. This is rendering the 'u' option useless and is causing
compiler warnings.
diff --git a/Makefile.include.in b/Makefile.include.in
@@ -1,5 +1,5 @@
 AR=@AR@
-ARFLAGS=crus
+ARFLAGS=crs
 RM=rm -rf
 SHELL=@SHELL@
 ARCH=@ARCH@
