[NaCl SDK] Add nacl_mounts to NaCl SDK build. Experimental for now.

native_client_sdk/src/libraries/nacl_mounts/kernel_intercept.cc

 /* Copyright (c) 2012 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_mounts/kernel_intercept.h"
 
-#include "nacl_mounts/kernel_intercept.h"
 #include "nacl_mounts/kernel_proxy.h"
 
 static KernelProxy* s_kp;
 
 void ki_init(void* kp) {
   if (kp == NULL) kp = new KernelProxy();
   s_kp = static_cast<KernelProxy*>(kp);
   s_kp->Init();
 }
 
@@ skipping 60 matching lines @@
   return s_kp->fsync(fd);
 }
 
 int ki_isatty(int fd) {
   return s_kp->isatty(fd);
 }
 
 int ki_close(int fd) {
   return s_kp->close(fd);
 }