[gnome-sdk-images/gnome-3-28] gcab: Fix meson gettext install with ensure-writable

[Alexander Larsson <alexl src gnome org>]

commit ae993488867891c5c7fb178a75750596b5d385d9
Author: Alexander Larsson <alexl redhat com>
Date:   Mon Mar 19 08:29:35 2018 +0100

    gcab: Fix meson gettext install with ensure-writable

 org.gnome.Sdk.json.in | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/org.gnome.Sdk.json.in b/org.gnome.Sdk.json.in
index 307d71d..58a9311 100644
--- a/org.gnome.Sdk.json.in
+++ b/org.gnome.Sdk.json.in
@@ -565,6 +565,10 @@
         {
             "name": "gcab",
             "buildsystem": "meson",
+            "ensure-writable": [
+                "/share/locale/*/LC_MESSAGES/*.mo",
+                "/share/runtime/locale/*/share/*/LC_MESSAGES/*.mo"
+            ],
             "sources": [
                 {
                     "type": "archive",