[NaCl SDK] nacl_io: add getnameinfo scaffolding

native_client_sdk/src/libraries/nacl_io/syscalls/getnameinfo.c

+/* Copyright 2014 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file. */
+
+#include "nacl_io/kernel_intercept.h"
+#include "nacl_io/kernel_wrap.h"
+
+#ifdef __native_client__
+int getnameinfo(const struct sockaddr *sa, socklen_t salen, char *host,
+                socklen_t hostlen, char *serv, socklen_t servlen,
+                unsigned int flags) {
+  return ki_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
+}
+#endif