tools/run-tests.py: Fixes for Windows

test/mjsunit/testcfg.py

 # Copyright 2008 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 57 matching lines @@
     while True:
       if files_match:
         files_list += files_match.group(1).strip().split()
         files_match = FILES_PATTERN.search(source, files_match.end())
       else:
         break
     files = [ os.path.normpath(os.path.join(self.root, '..', '..', f))
               for f in files_list ]
     testfilename = os.path.join(self.root, testcase.path + self.suffix())
     if SELF_SCRIPT_PATTERN.search(source):
-      env = ["-e", "TEST_FILE_NAME=\"%s\"" % testfilename]
+      env = ["-e", "TEST_FILE_NAME=\"%s\"" % testfilename.replace("\\", "\\\\")]
       files = env + files
     files.append(os.path.join(self.root, "mjsunit.js"))
     files.append(testfilename)
 
     flags += files
     if context.isolates:
       flags.append("--isolate")
       flags += files
 
     return testcase.flags + flags
@@ skipping 130 matching lines @@
 
   def GetTestStatus(self, sections, defs):
     status_file = join(self.root, 'mjsunit.status')
     if exists(status_file):
       test.ReadConfigurationInto(status_file, sections, defs)
 
 
 
 def GetConfiguration(context, root):
   return MjsunitTestConfiguration(context, root)