[gnome-photos] Add call to git submodule update from autogen.sh

[Debarshi Ray <debarshir src gnome org>]

commit 558897c7165a0d5981918f4916a05770138b863c
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Sat Nov 10 11:49:54 2012 +0100

    Add call to git submodule update from autogen.sh

 autogen.sh |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index 4c9af1f..ba60751 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -17,6 +17,8 @@ which gnome-autogen.sh || {
     exit 1
 }
 
+git submodule update --init --recursive
+
 REQUIRED_AUTOCONF_VERSION=2.63
 REQUIRED_AUTOMAKE_VERSION=1.11
 REQUIRED_INTLTOOL_VERSION=0.40.0