[MIPS] Add remaining parts for building tests for MIPS

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 os
 import platform
 import re
 import subprocess
@@ skipping 1467 matching lines @@
 def SelUniversalTest(env, name, nexe, sel_universal_flags=None, **kwargs):
   # The dynamic linker's ability to receive arguments over IPC at
   # startup currently requires it to reject the plugin's first
   # connection, but this interferes with the sel_universal-based
   # testing because sel_universal does not retry the connection.
   # TODO(mseaborn): Fix by retrying the connection or by adding an
   # option to ld.so to disable its argv-over-IPC feature.
   if env.Bit('nacl_glibc') and not env.Bit('nacl_static_link'):
     return []
 
+  # TODO(petarj): Sel_universal hangs on qemu-mips. Enable when fixed.
+  if env.Bit('target_mips32') and env.UsingEmulator():
+    return []
+
   if sel_universal_flags is None:
     sel_universal_flags = []
 
   # When run under qemu, sel_universal must sneak in qemu to the execv
   # call that spawns sel_ldr.
   if env.UsingEmulator():
     sel_universal_flags.append('--command_prefix')
     sel_universal_flags.append(env.GetEmulator())
 
   if 'TRUSTED_ENV' not in env:
@@ skipping 2277 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:')