[gnome-sdk-images] atk: switch to meson

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 3977bb07547a083fbb7c4a77d29a4a4d76a484df
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Tue Apr 24 09:44:42 2018 -0500

    atk: switch to meson

 org.gnome.Sdk.json.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/org.gnome.Sdk.json.in b/org.gnome.Sdk.json.in
index c0a0634..296372a 100644
--- a/org.gnome.Sdk.json.in
+++ b/org.gnome.Sdk.json.in
@@ -316,6 +316,7 @@
         },
         {
             "name": "atk",
+            "buildsystem": "meson",
             "sources": [
                 {
                     "type": "git",