Add shared library version of libcli_main

ports/nacl-spawn/nacl_main.h

Index: ports/nacl-spawn/nacl_main.h
diff --git a/ports/nacl-spawn/nacl_main.h b/ports/nacl-spawn/nacl_main.h
deleted file mode 100644
index 46c4fd9d2cc84b52923e177ef4967947f9d084f3..0000000000000000000000000000000000000000
--- a/ports/nacl-spawn/nacl_main.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (c) 2014 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.
- */
-
-#ifndef _NACL_SPAWN_NACL_MAIN_H_
-#define _NACL_SPAWN_NACL_MAIN_H_
-
-#include <spawn.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * Entry point expected by libcli_main.a
- */
-extern int nacl_main(int argc, char* argv[]);
-
-/*
- * Untar a startup bundle to a particular root.
- *
- * NOTE: This lives in libcli_main.a
- * Args:
- *   arg0: The contents of argv[0], used to determine relative tar location.
- *   tarfile: The name of a tarfile to extract.
- *   root: The absolute path to extract the startup tar file to.
- */
-extern int nacl_startup_untar(
-    const char* argv0, const char* tarfile, const char* root);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif