[gnome-builder] po: ignore submodules to quiet damned lies on branches

[Christian Hergert <chergert src gnome org>]

commit 62b4974c6923da92fa381e368164e56e44457375
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jan 15 15:08:04 2018 -0800

    po: ignore submodules to quiet damned lies on branches

 po/POTFILES.skip | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index 333d70233..53798dd96 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -5,3 +5,8 @@ src/gstyle/tests/data/gstyle-color-editor.ui
 src/gstyle/tests/data/palette.gstyle.xml
 src/plugins/gdb/gdbwire.c
 src/plugins/vala-pack/ide-vala-preferences-addin.c
+# Damned Lies only reads master POTFILES.skip, and that can
+# have an affect on branches (which do have submodules), even
+# though master does not.
+# https://bugzilla.gnome.org/show_bug.cgi?id=695008#c7
+submodules