keyutils: use cflags correctly

packages/sysutils/keyutils/patches/keyutils-02-cflags.patch

@@ -0,0 +1,23 @@
+From d8f15e55b4d357ac0a2b384888080b120600d09d Mon Sep 17 00:00:00 2001
+From: vpeter4 <peter.vicman@gmail.com>
+Date: Wed, 8 Apr 2015 18:27:06 +0200
+Subject: [PATCH] cflags
+
+---
+ Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index c904eaf..df0fe3e 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,5 +1,5 @@
+ CPPFLAGS	:= -I.
+-CFLAGS		:= -g -Wall -Werror
++CFLAGS		+= -g -Wall -Werror
+ INSTALL		:= install
+ DESTDIR		:=
+ SPECFILE	:= keyutils.spec
+-- 
+1.8.1.2
+