Remove gclient_utils.Popen() usage from gclient.py

R=dpranke@chromium.org
BUG=
TEST=


Review URL: http://codereview.chromium.org/7795061

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@100173 0039d316-1c4b-4281-b951-d872f2087c98

gclient.py

@@ -1000,7 +1000,7 @@ def CMDrecurse(parser, args):
       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