Add asn1_mac

Reviewed-by: NRichard Levitte <levitte@openssl.org>

include/openssl/asn1_mac.h

+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#error "This file is obsolete; please update your software."