[PATCH 03 of 17] configitems: register the 'format.chunkcachesize' config

[Pierre-Yves David]

# HG changeset patch
# User Pierre-Yves David <pierre-yves.david at octobus.net>
# Date 1498786941 -7200
#      Fri Jun 30 03:42:21 2017 +0200
# Node ID 50ce9211f36b5fd75d509a2a7d7dbf69c77bfb92
# Parent  827304d8ad4a2be6d73b8fb49202e95c9b9cec72
# 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 50ce9211f36b
configitems: register the 'format.chunkcachesize' config

diff --git a/mercurial/configitems.py b/mercurial/configitems.py
--- a/mercurial/configitems.py
+++ b/mercurial/configitems.py
@@ -107,6 +107,9 @@ coreconfigitem('devel', 'strip-obsmarker
 coreconfigitem('format', 'aggressivemergedeltas',
     default=False,
 )
+coreconfigitem('format', 'chunkcachesize',
+    default=None,
+)
 coreconfigitem('hostsecurity', 'ciphers',
     default=None,
 )