[PATCH 5 of 6] push: `exchange.push` instead of `localrepo.push`

[Pierre-Yves David]

# HG changeset patch
# User Pierre-Yves David <pierre-yves.david at fb.com>
# Date 1411634569 25200
#      Thu Sep 25 01:42:49 2014 -0700
# Node ID 3cf57b53c3cfbc9933bb0a46eb8814aac9897ac0
# Parent  299c97274dae147b286f3162ffc9ac232f31f556
push: `exchange.push` instead of `localrepo.push`

The later is going away.

diff --git a/mercurial/subrepo.py b/mercurial/subrepo.py
--- a/mercurial/subrepo.py
+++ b/mercurial/subrepo.py
@@ -10,10 +10,11 @@ import xml.dom.minidom
 import stat, subprocess, tarfile
 from i18n import _
 import config, util, node, error, cmdutil, bookmarks, match as matchmod
 import phases
 import pathutil
+import exchange
 hg = None
 propertycache = util.propertycache
 
 nullstate = ('', '', 'empty')
 
@@ -815,15 +816,15 @@ class hgsubrepo(abstractsubrepo):
                     % (subrelpath(self), dsturl))
                 return None
         self._repo.ui.status(_('pushing subrepo %s to %s\n') %
             (subrelpath(self), dsturl))
         other = hg.peer(self._repo, {'ssh': ssh}, dsturl)
-        res = self._repo.push(other, force, newbranch=newbranch)
+        res = exchange.push(self._repo, other, force, newbranch=newbranch)
 
         # the repo is now clean
         self._cachestorehash(dsturl)
-        return res
+        return res.cgresult
 
     @annotatesubrepoerror
     def outgoing(self, ui, dest, opts):
         return hg.outgoing(ui, self._repo, _abssource(self._repo, True), opts)