Revert "Revert "Upgrade to 5.0.71.48"" DO NOT MERGE

This reverts commit f2e3994fa5148cc3d9946666f0b0596290192b0e,
and updates the x64 makefile properly so it doesn't break that
build.

Change-Id: Ib83e35bfbae6af627451c926a9650ec57c045605
(cherry picked from commit 109988c7ccb6f3fd1a58574fa3dfb88beaef6632)
diff --git a/tools/gyp/test/make/gyptest-noload.py b/tools/gyp/test/make/gyptest-noload.py
new file mode 100755
index 0000000..1f51033
--- /dev/null
+++ b/tools/gyp/test/make/gyptest-noload.py
@@ -0,0 +1,57 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2010 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+Tests the use of the NO_LOAD flag which makes loading sub .mk files
+optional.
+"""
+
+# Python 2.5 needs this for the with statement.
+from __future__ import with_statement
+
+import os
+import TestGyp
+
+test = TestGyp.TestGyp(formats=['make'])
+
+test.run_gyp('all.gyp', chdir='noload')
+
+test.relocate('noload', 'relocate/noload')
+
+test.build('build/all.gyp', test.ALL, chdir='relocate/noload')
+test.run_built_executable('exe', chdir='relocate/noload',
+                          stdout='Hello from shared.c.\n')
+
+# Just sanity test that NO_LOAD=lib doesn't break anything.
+test.build('build/all.gyp', test.ALL, chdir='relocate/noload',
+           arguments=['NO_LOAD=lib'])
+test.run_built_executable('exe', chdir='relocate/noload',
+                          stdout='Hello from shared.c.\n')
+test.build('build/all.gyp', test.ALL, chdir='relocate/noload',
+           arguments=['NO_LOAD=z'])
+test.run_built_executable('exe', chdir='relocate/noload',
+                          stdout='Hello from shared.c.\n')
+
+# Make sure we can rebuild without reloading the sub .mk file.
+with open('relocate/noload/main.c', 'a') as src_file:
+  src_file.write("\n")
+test.build('build/all.gyp', test.ALL, chdir='relocate/noload',
+           arguments=['NO_LOAD=lib'])
+test.run_built_executable('exe', chdir='relocate/noload',
+                          stdout='Hello from shared.c.\n')
+
+# Change shared.c, but verify that it doesn't get rebuild if we don't load it.
+with open('relocate/noload/lib/shared.c', 'w') as shared_file:
+  shared_file.write(
+      '#include "shared.h"\n'
+      'const char kSharedStr[] = "modified";\n'
+  )
+test.build('build/all.gyp', test.ALL, chdir='relocate/noload',
+           arguments=['NO_LOAD=lib'])
+test.run_built_executable('exe', chdir='relocate/noload',
+                          stdout='Hello from shared.c.\n')
+
+test.pass_test()