[jhbuild] 3.20: Use the gnome-3-20 branch of at-spi2-atk

[Matthias Clasen <matthiasc src gnome org>]

commit abc069032247319f6047ebbc087942e5cf1860c2
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Apr 11 21:27:50 2016 -0400

    3.20: Use the gnome-3-20 branch of at-spi2-atk

 modulesets/gnome-suites-core-3.20.modules |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/modulesets/gnome-suites-core-3.20.modules b/modulesets/gnome-suites-core-3.20.modules
index 3da4211..7540bc8 100644
--- a/modulesets/gnome-suites-core-3.20.modules
+++ b/modulesets/gnome-suites-core-3.20.modules
@@ -52,7 +52,7 @@
   </autotools>
 
   <autotools id="at-spi2-atk">
-    <branch/>
+    <branch revision="gnome-3-20"/>
     <dependencies>
       <dep package="dbus"/>
       <dep package="glib"/>