[gnome-apps-nightly/gnome-3-20] Fix gnome-doc-utils build for Geary on aarch64.

[Michael Gratton <mjog src gnome org>]

commit d02ea1b8b6a2968279a4fcbe4a1b2e8a82f69519
Author: Michael James Gratton <mike vee net>
Date:   Mon Jul 11 10:25:47 2016 +1000

    Fix gnome-doc-utils build for Geary on aarch64.

 org.gnome.Geary.json |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/org.gnome.Geary.json b/org.gnome.Geary.json
index 2df3a4d..f08f1f4 100644
--- a/org.gnome.Geary.json
+++ b/org.gnome.Geary.json
@@ -47,6 +47,16 @@
   "modules": [
         {
             "name": "gnome-doc-utils",
+            "build-options": {
+                "arch" : {
+                           /* Lie about our arch - no actual compilation happens here. */
+                    "aarch64": {
+                        "config-opts": [
+                            "--build=amd64"
+                        ]
+                    }
+                }
+            },
             "sources": [
                 {
                     "type": "archive",