[PATCH 5 of 5 lfs-v2] changegroup3: enable on 'lfs' repo requirements

[Remi Chaintron]

# HG changeset patch
# User Remi Chaintron <remi at fb.com>
# Date 1479829452 0
#      Tue Nov 22 15:44:12 2016 +0000
# Branch stable
# Node ID 0bc5b1d488448b064575b165b85e8341f8299ce7
# Parent  02ae3995e54d3e38e059224f4e56b998735b5be2
changegroup3: enable on 'lfs' repo requirements

`changegroup3` is required by the `lfs` extension in order to send flags for
revlog objects over the wire.

diff --git a/mercurial/changegroup.py b/mercurial/changegroup.py
--- a/mercurial/changegroup.py
+++ b/mercurial/changegroup.py
@@ -879,14 +879,16 @@
 # Changegroup versions that can be applied to the repo
 def supportedincomingversions(repo):
     versions = allsupportedversions(repo.ui)
-    if 'treemanifest' in repo.requirements:
+    if ('treemanifest' in repo.requirements or
+        'lfs' in repo.requirements):
         versions.add('03')
     return versions
 
 # Changegroup versions that can be created from the repo
 def supportedoutgoingversions(repo):
     versions = allsupportedversions(repo.ui)
-    if 'treemanifest' in repo.requirements:
+    if ('treemanifest' in repo.requirements or
+        'lfs' in repo.requirements):
         # Versions 01 and 02 support only flat manifests and it's just too
         # expensive to convert between the flat manifest and tree manifest on
         # the fly. Since tree manifests are hashed differently, all of history
diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
--- a/mercurial/localrepo.py
+++ b/mercurial/localrepo.py
@@ -238,7 +238,7 @@
 class localrepository(object):
 
     supportedformats = set(('revlogv1', 'generaldelta', 'treemanifest',
-                            'manifestv2'))
+                            'manifestv2', 'lfs'))
     _basesupported = supportedformats | set(('store', 'fncache', 'shared',
                                              'dotencode'))
     openerreqs = set(('revlogv1', 'generaldelta', 'treemanifest', 'manifestv2'))