[PATCH 07 of 17] configitems: register the 'format.maxchainlen' config

[Pierre-Yves David]

# HG changeset patch
# User Pierre-Yves David <pierre-yves.david at octobus.net>
# Date 1498786946 -7200
#      Fri Jun 30 03:42:26 2017 +0200
# Node ID 7b1e558486117974d26fedd5748c6ab9908af9f4
# Parent  dfb283e6704585f7d4b86e5cb1049889314a5b31
# EXP-Topic config.register.format
# Available At https://www.mercurial-scm.org/repo/users/marmoute/mercurial/
#              hg pull https://www.mercurial-scm.org/repo/users/marmoute/mercurial/ -r 7b1e55848611
configitems: register the 'format.maxchainlen' config

diff --git a/mercurial/configitems.py b/mercurial/configitems.py
--- a/mercurial/configitems.py
+++ b/mercurial/configitems.py
@@ -119,6 +119,9 @@ coreconfigitem('format', 'generaldelta',
 coreconfigitem('format', 'manifestcachesize',
     default=None,
 )
+coreconfigitem('format', 'maxchainlen',
+    default=None,
+)
 coreconfigitem('hostsecurity', 'ciphers',
     default=None,
 )