[MIPS] Update SConstruct to use new MIPS toolchain.

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 2343 matching lines @@
     def FakeInstall(dest, source, env):
       print 'Not installing', dest
       # Replace build commands with no-ops
     env.Replace(CC='true', CXX='true', LD='true',
                 AR='true', RANLIB='true', INSTALL=FakeInstall)
     # Allow emulation on x86 hosts for testing built_elsewhere flag
     if not platform.machine().startswith('mips'):
       env.Replace(EMULATOR=jail + '/run_under_qemu_mips32')
   else:
     tc_dir = os.path.join(os.getcwd(), 'toolchain', 'linux_mips-trusted',
-                          'mips-release', 'bin')
-    if not which(os.path.join(tc_dir, 'mips-linux-gnu-gcc')):
+                          'bin')
+    if not which(os.path.join(tc_dir, 'mipsel-linux-gnu-gcc')):
       print ("\nERRROR: MIPS trusted TC is not installed - try running:\n"
              "tools/trusted_cross_toolchains/trusted-toolchain-creator"
              ".mipsel.squeeze.sh trusted_sdk")
       sys.exit(-1)
-    env.Replace(CC=os.path.join(tc_dir, 'mips-linux-gnu-gcc'),
-                CXX=os.path.join(tc_dir, 'mips-linux-gnu-g++'),
-                LD=os.path.join(tc_dir, 'mips-linux-gnu-ld'),
+    env.Replace(CC=os.path.join(tc_dir, 'mipsel-linux-gnu-gcc'),
+                CXX=os.path.join(tc_dir, 'mipsel-linux-gnu-g++'),
+                LD=os.path.join(tc_dir, 'mipsel-linux-gnu-ld'),
                 EMULATOR=os.path.join(jail,
                                       'run_under_qemu_mips32'),
                 ASFLAGS=[],
                 LIBPATH=['${LIB_DIR}',
-                         jail + '/mips-release/mips-linux-gnu/libc/el/usr/lib'],
-                LINKFLAGS=['-EL', '-T',
+                         jail + '/sysroot/usr/lib'],
+                LINKFLAGS=['-T',
                     os.path.join(jail, 'ld_script_mips_trusted')]
                 )
 
     env.Append(LIBS=['rt', 'dl', 'pthread'],
-                     CCFLAGS=['-EL', '-Wl, -EL', '-march=mips32r2'])
+                     CCFLAGS=['-march=mips32r2'])
 
 
 def MakeLinuxEnv():
   linux_env = MakeUnixLikeEnv().Clone(
       BUILD_TYPE = '${OPTIMIZATION_LEVEL}-linux',
       BUILD_TYPE_DESCRIPTION = 'Linux ${OPTIMIZATION_LEVEL} build',
       tools = ['target_platform_linux'],
       # TODO(bradnelson): this should really be able to live in unix_like_env
       #                   but can't due to what the target_platform_x module is
       #                   doing.
@@ skipping 1017 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:')