Add support for new pnacl native toolchain driver

lib/webports/util.py

 # Copyright 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.
 
 import fcntl
 import hashlib
 import os
 import shutil
 import subprocess
 import sys
@@ skipping 19 matching lines @@
 # versions of the SDK use the one of the pepper_XX branches (or use
 # --skip-sdk-version-check).
 MIN_SDK_VERSION = 49
 
 arch_to_pkgarch = {
     'x86_64': 'x86-64',
     'i686': 'i686',
     'arm': 'arm',
     'pnacl': 'pnacl',
     'emscripten': 'emscripten',
+    'le32': 'le32'
 }
 
 # Inverse of arch_to_pkgarch
 pkgarch_to_arch = {v: k for k, v in arch_to_pkgarch.items()}
 
 LOG_ERROR = 0
 LOG_WARN = 1
 LOG_INFO = 2
 LOG_VERBOSE = 3
 LOG_TRACE = 4
@@ skipping 431 matching lines @@
 
 class InstallLock(DirLock):
   """Lock used when installing/uninstalling package"""
 
   def __init__(self, config):
     root = get_install_root(config)
     super(InstallLock, self).__init__(root)
 
 
 check_stdout_for_color_support()