Fix paths in build process so we can build dartc (and then frog) on Windows.

tools/create_sdk.py

 #!/usr/bin/env python
 #
 # Copyright (c) 2011, 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.
 #
 # A script which will be invoked from gyp to create an SDK. 
 #
 # Usage: create_sdk.py sdk_directory
 #
@@ skipping 77 matching lines @@
   if exists(SDK):
     rmtree(SDK)
 
   # Create and populate sdk/bin.
   BIN = join(SDK_tmp, 'bin')
   os.makedirs(BIN)
 
   # Copy the Dart VM binary into sdk/bin.
   # TODO(dgrove) - deal with architectures that are not ia32.
   build_dir = os.path.dirname(argv[1])
+  frogc_src_binary = join(HOME, 'frog', 'frogc')
+  frogc_dest_binary = join(BIN, 'frogc')
   if utils.GuessOS() == 'win32':
     # TODO(dgrove) - deal with frogc.bat
     dart_src_binary = join(HOME, build_dir, 'dart.exe')
     dart_dest_binary = join(BIN, 'dart.exe')
   else:
-    frogc_src_binary = join(HOME, 'frog', 'frogc')
     dart_src_binary = join(HOME, build_dir, 'dart')
     dart_dest_binary = join(BIN, 'dart')
-    frogc_dest_binary = join(BIN, 'frogc')
   copyfile(dart_src_binary, dart_dest_binary)
   copymode(dart_src_binary, dart_dest_binary)
   copyfile(frogc_src_binary, frogc_dest_binary)
   copymode(frogc_src_binary, frogc_dest_binary)
 
   # Create sdk/bin/frogc.dart, and hack as needed.
   frog_src_dir = join(HOME, 'frog')
 
   # Convert frogc.dart's imports from import('*') -> import('frog/*').
   frogc_contents = open(join(frog_src_dir, 'frogc.dart')).read()
@@ skipping 256 matching lines @@
   UTIL = join(SDK_tmp, 'util')
   os.makedirs(UTIL)
 
   copytree(join(HOME, 'utils', 'dartdoc'), join(UTIL, 'dartdoc'), 
            ignore=ignore_patterns('.svn'))
 
   move(SDK_tmp, SDK)
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv))