Enable some sandboxed translation tests

SConstruct

 #! -*- python -*-
 # Copyright (c) 2012 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.
 
 import atexit
 import glob
 import os
 import platform
 import shutil
@@ skipping 3826 matching lines @@
 def PnaclSetEmulatorForSandboxedTranslator(selected_envs):
   # Slip in emulator flags if necessary, for the sandboxed pnacl translator
   # on ARM, once emulator is actually known (vs in naclsdk.py, where it
   # is not yet known).
   for env in selected_envs:
     if (env.Bit('bitcode')
         and env.Bit('use_sandboxed_translator')
         and env.UsingEmulator()):
       # This must modify the LINK command itself, since LINKFLAGS may
       # be filtered (e.g., in barebones tests).
-      env['LINK'] = env.get('LINK') + ' --pnacl-use-emulator'
+      env.Append(LINK=' --pnacl-use-emulator')
+      env.Append(TRANSLATE=' --pnacl-use-emulator')
 
 # ----------------------------------------------------------
 # Blank out defaults.
 Default(None)
 
 # Apply optional supplement if present in the directory tree.
 if os.path.exists(pre_base_env.subst('$MAIN_DIR/supplement/supplement.scons')):
   SConscript('supplement/supplement.scons', exports=['environment_list'])
 
 # print sytem info (optionally)
@@ skipping 38 matching lines @@
   nacl_env.ValidateSdk()
 
 if BROKEN_TEST_COUNT > 0:
   msg = "There are %d broken tests." % BROKEN_TEST_COUNT
   if GetOption('brief_comstr'):
     msg += " Add --verbose to the command line for more information."
   print msg
 
 # separate warnings from actual build output
 Banner('B U I L D - O U T P U T:')