Remove gclient_utils.Popen() usage from gclient.py

gclient.py

 #!/usr/bin/env python
 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Meta checkout manager supporting both Subversion and GIT.
 
 Files
   .gclient      : Current client configuration, written by 'config' command.
                   Format is a Python script defining 'solutions', a list whose
@@ skipping 982 matching lines @@
 
   for path, url in entries.iteritems():
     scm = gclient_scm.GetScmName(url)
     if scm_set and scm not in scm_set:
       continue
     cwd = os.path.normpath(os.path.join(root, path))
     if scm:
       env['GCLIENT_SCM'] = scm
     if url:
       env['GCLIENT_URL'] = url
-    gclient_utils.Popen(args, cwd=cwd, env=env).communicate()
+    subprocess2.call(args, cwd=cwd, env=env)
   return 0
 
 
 @attr('usage', '[url] [safesync url]')
 def CMDconfig(parser, args):
   """Create a .gclient file in the current directory.
 
 This specifies the configuration for further commands. After update/sync,
 top-level DEPS files in each module are read to determine dependent
 modules to operate on as well. If optional [url] parameter is
@@ skipping 343 matching lines @@
   except (gclient_utils.Error, subprocess2.CalledProcessError), e:
     print >> sys.stderr, 'Error: %s' % str(e)
     return 1
 
 
 if '__main__' == __name__:
   fix_encoding.fix_encoding()
   sys.exit(Main(sys.argv[1:]))
 
 # vim: ts=2:sw=2:tw=80:et: