[gitg] Add workaround for intltool issues with subdir builds

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 0a5c8e39f0508fe0af825b5827e3d209b2f76871
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Sat Aug 8 10:32:02 2015 +0200

    Add workaround for intltool issues with subdir builds

 po/POTFILES.skip |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index 2b4091b..e29a947 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -1,5 +1,7 @@
 data/gitg.desktop.in
 data/org.gnome.gitg.gschema.xml.in
+sub/data/gitg.desktop.in
+sub/data/org.gnome.gitg.gschema.xml.in
 gitg/commit/gitg-commit.c
 gitg/commit/gitg-commit-dialog.c
 gitg/gitg-application.c