Boris Feld <boris.feld@octobus.net> [Sun, 08 Oct 2017 21:48:40 +0200] rev 34522
configitems: register 'merge.checkunknown' and 'merge.checkignored'
They both use the same function defining a default, so we need to update them at
the same time.
Boris Feld <boris.feld@octobus.net> [Sun, 08 Oct 2017 21:47:14 +0200] rev 34521
configitems: register the 'diff.*' config
All the config were already using a unified function with a forced default, so,
registering them all at once seems safe.