[gnome-settings-daemon] build: Init git submodules in autogen.sh

[Bastien Nocera <hadess src gnome org>]

commit ccc1cd1e6f026229417ca9a563c050810f752d1d
Author: Colin Walters <walters verbum org>
Date:   Tue Nov 13 13:20:34 2012 -0500

    build: Init git submodules in autogen.sh
    
    As gnome-desktop, gstreamer or ostree do.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=688272

 autogen.sh |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index c4c6bae..def7ad6 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -22,4 +22,11 @@ which gnome-autogen.sh || {
     exit 1
 }
 
+# Fetch submodules if needed
+if test ! -f plugins/media-keys/gvc/Makefile.am; then
+  echo "+ Setting up submodules"
+  git submodule init
+fi
+git submodule update
+
 . gnome-autogen.sh