Add product mode:

tools/build.py

 #!/usr/bin/env python
 #
 # 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.
 #
 
 import optparse
 import os
 import re
@@ skipping 30 matching lines @@
 the Dart repo root,
 
   %s ,
 
 unless you really intend to use a non-default Makefile.""" % DART_ROOT
 
 def BuildOptions():
   result = optparse.OptionParser(usage=usage)
   result.add_option("-m", "--mode",
       help='Build variants (comma-separated).',
-      metavar='[all,debug,release]',
+      metavar='[all,debug,release,product]',
       default='debug')
   result.add_option("-v", "--verbose",
       help='Verbose output.',
       default=False, action="store_true")
   result.add_option("-a", "--arch",
       help='Target architectures (comma-separated).',
       metavar='[all,ia32,x64,simarm,arm,simarmv6,armv6,simarmv5te,armv5te,'
               'simmips,mips,simarm64,arm64,]',
       default=utils.GuessArchitecture())
   result.add_option("--os",
@@ skipping 28 matching lines @@
   if options.arch == 'all':
     options.arch = 'ia32,x64,simarm,simmips,simarm64'
   if options.mode == 'all':
     options.mode = 'release,debug'
   if options.os == 'all':
     options.os = 'host,android'
   options.mode = options.mode.split(',')
   options.arch = options.arch.split(',')
   options.os = options.os.split(',')
   for mode in options.mode:
-    if not mode in ['debug', 'release']:
+    if not mode in ['debug', 'release', 'product']:
       print "Unknown mode %s" % mode
       return False
   for arch in options.arch:
     archs = ['ia32', 'x64', 'simarm', 'arm', 'simarmv6', 'armv6',
              'simarmv5te', 'armv5te', 'simmips', 'mips', 'simarm64', 'arm64',]
     if not arch in archs:
       print "Unknown arch %s" % arch
       return False
   options.os = [ProcessOsOption(os_name) for os_name in options.os]
   for os_name in options.os:
@@ skipping 441 matching lines @@
           else:
             if BuildOneConfig(options, target, target_os,
                               mode, arch, cross_build) != 0:
               return 1
 
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(Main())