[hitori] Add missing file to POTFILES.in so strings are translatable

[Andre Klapper <aklapper src gnome org>]

commit c560effeda5af2d1e43b7f4313c029b365d3ade0
Author: Andre Klapper <a9016009 gmx de>
Date:   Tue Nov 9 21:08:38 2010 +0100

    Add missing file to POTFILES.in so strings are translatable

 po/POTFILES.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 8fd7070..a6d9801 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -4,3 +4,4 @@ data/hitori.desktop.in
 [type: gettext/glade]data/hitori.ui
 src/interface.c
 src/main.c
+src/rules.c