[test] Fix redirect problem for downloading test data on windows.

tools/testrunner/local/utils.py

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 14 matching lines @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
 import os
 from os.path import exists
 from os.path import isdir
 from os.path import join
 import platform
 import re
+import subprocess
 import urllib2
 
 
 def GetSuitePaths(test_root):
   return [ f for f in os.listdir(test_root) if isdir(join(test_root, f)) ]
 
 
 # Reads a file into an array of strings
 def ReadLinesFrom(name):
   lines = []
@@ skipping 69 matching lines @@
     return '32'
 
 
 def IsWindows():
   return GuessOS() == 'windows'
 
 
 def URLRetrieve(source, destination):
   """urllib is broken for SSL connections via a proxy therefore we
   can't use urllib.urlretrieve()."""
+  if IsWindows():
+    try:
+      # In python 2.7.6 on windows, urlopen has a problem with redirects.
+      # Try using curl instead. Note, this is fixed in 2.7.8.
+      subprocess.check_call(["curl", source, '-L', '-o', destination])
+      return
+    except:
+      # If there's no curl, fall back to urlopen.
+      print "Curl is currently not installed. Falling back to python."
+      pass
   with open(destination, 'w') as f:
     f.write(urllib2.urlopen(source).read())