From e2ee7b22dd66525c4e532742e07da091fa029ec5 Mon Sep 17 00:00:00 2001
From: "P.M. Sutter" <sutter@iap.fr>
Date: Tue, 6 Nov 2012 08:01:08 -0600
Subject: [PATCH] removed periodic boundary handing in stacking, since we may
 be dealing with subsections