Make libnosys function stubs part of libnacl

src/untrusted/nosys/get_current_dir_name.c

Index: src/untrusted/nosys/get_current_dir_name.c
diff --git a/src/untrusted/nosys/get_current_dir_name.c b/src/untrusted/nosys/get_current_dir_name.c
deleted file mode 100644
index 847c42be4a9cb75300f02fb25646868a40196f8d..0000000000000000000000000000000000000000
--- a/src/untrusted/nosys/get_current_dir_name.c
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright 2010 The Native Client Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can
- * be found in the LICENSE file.
- */
-
-
-/*
- * Stub routine for `get_current_dir_name' for porting support.
- */
-
-#include <unistd.h>
-#include <errno.h>
-
-char *get_current_dir_name(void) {
-  errno = ENOSYS;
-  return NULL;
-}
-
-#include "native_client/src/untrusted/nosys/warning.h"
-stub_warning(get_current_dir_name);