Prepare for using GYP build on buildbots

test/test262/testcfg.py

Index: test/test262/testcfg.py
diff --git a/test/test262/testcfg.py b/test/test262/testcfg.py
index 2c9bf06f1428741a935406c769bf085f16f5a21c..07f760c8d7a4d7a7c77300f9ba20f5578b3acb54 100644
--- a/test/test262/testcfg.py
+++ b/test/test262/testcfg.py
@@ -31,6 +31,7 @@ import os
 from os.path import join, exists
 import urllib
 import hashlib
+import sys
 import tarfile
 
 
@@ -120,7 +121,11 @@ class Test262TestConfiguration(test.TestConfiguration):
         os.remove(archive_name)
         raise Exception("Hash mismatch of test data file")
       archive = tarfile.open(archive_name, 'r:bz2')
-      archive.extractall(join(self.root))
+      if sys.platform in ('win32', 'cygwin'):
+        # Magic incantation to allow longer path names on Windows.
+        archive.extractall(u'\\\\?\\%s' % self.root)
+      else:
+        archive.extractall(self.root)
       os.rename(join(self.root, 'test262-%s' % revision), directory_name)
 
   def GetBuildRequirements(self):