[gnome-shell] build: Work around distcheck issue

[Florian Müllner <fmuellner src gnome org>]

commit 2d3aff3f046fde4e18f6046254ea2a89abd724b5
Author: Florian Müllner <fmuellner gnome org>
Date:   Fri Feb 20 20:13:46 2015 +0100

    build: Work around distcheck issue

 po/POTFILES.skip |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index c3a821c..31998fe 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -1,2 +1,4 @@
 data/org.gnome.shell.evolution.calendar.gschema.xml.in
 src/calendar-server/evolution-calendar.desktop.in
+# Meh, autofools :-(
+sub/src/calendar-server/evolution-calendar.desktop.in