Add windows installer functionallity to editor build script.

tools/utils.py

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # This file contains a set of utilities functions used by other Python-based
 # scripts.
 
 import commands
 import os
 import platform
@@ skipping 213 matching lines @@
 
 def GetBuildRoot(host_os, mode=None, arch=None, target_os=None):
   build_root = GetBuildDir(host_os, target_os)
   if mode:
     build_root = os.path.join(build_root, GetBuildConf(mode, arch))
   return build_root
 
 def GetBaseDir():
   return BASE_DIR
 
+# Return the base part of the version, Major.Minor.Build.Patch,
+# without the _revision addition
+def GetShortVersion():
+  (major, minor, build, patch) = ReadVersionFile()
+  return '%s.%s.%s.%s' % (major, minor, build, patch)
+
+
 def GetVersion():
   version_tuple = ReadVersionFile()
   if not version_tuple:
     return None
 
   (major, minor, build, patch) = version_tuple
   revision = GetSVNRevision()
   user = GetUserName()
   # We don't add username to release builds (or any builds on the bots)
   if user == 'chrome-bot':
@@ skipping 228 matching lines @@
     os.chdir(self._working_directory)
 
   def __exit__(self, *_):
     print "Enter directory = ", self._old_cwd
     os.chdir(self._old_cwd)
 
 
 if __name__ == "__main__":
   import sys
   Main(sys.argv)