Run NaClEnvCleanser in standalone sel_ldr (in addition to sel_main_chrome). Add a couple of ld.so...

src/trusted/service_runtime/sel_main_chrome.c

 /*
  * Copyright (c) 2011 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.
  */
 
 #include "native_client/src/include/portability.h"
 #include "native_client/src/include/portability_io.h"
 
 #if NACL_OSX
@@ skipping 232 matching lines @@
    */
   if (LOAD_OK != errcode) {
     goto done;
   }
 
   /*
    * Enable debugging if requested.
    */
   nap->enable_debug_stub = debug;
 
-  NaClEnvCleanserCtor(&env_cleanser);
-  if (!NaClEnvCleanserInit(&env_cleanser, envp)) {
+  NaClEnvCleanserCtor(&env_cleanser, 1);
+  if (!NaClEnvCleanserInit(&env_cleanser, envp, NULL)) {
     NaClLog(LOG_FATAL, "Failed to initialise env cleanser\n");
   }
 
   /*
    * only nap->ehdrs.e_entry is usable, no symbol table is
    * available.
    */
   if (!NaClCreateMainThread(nap, ac, av,
                             NaClEnvCleanserEnvironment(&env_cleanser))) {
     fprintf(stderr, "creating main thread failed\n");
@@ skipping 11 matching lines @@
    */
   return ret_code;
 
  done:
   fflush(stdout);
 
   NaClAllModulesFini();
 
   return ret_code;
 }