[gupnp-tools] Work-around error on distcheck

[Jens Georg <jensgeorg src gnome org>]

commit 2b16447f6ab8d47eebf3ed73fa826c57de01225d
Author: Jens Georg <mail jensge org>
Date:   Fri Nov 27 08:42:30 2015 +0100

    Work-around error on distcheck
    
    intltool does not seem to play nicely with automake-1.15.
    
    Signed-off-by: Jens Georg <mail jensge org>

 po/POTFILES.skip |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index c8ccd4d..c047e9e 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -4,3 +4,7 @@ data/gupnp-av-cp.desktop.in
 data/gupnp-network-light.desktop.in
 data/gupnp-universal-cp.desktop.in
 data/gupnp-av-cp.ui
+sub/data/gupnp-av-cp.desktop.in
+sub/data/gupnp-network-light.desktop.in
+sub/data/gupnp-universal-cp.desktop.in
+sub/data/gupnp-av-cp.ui