[gnome-photos] Update to latest libgd

[Debarshi Ray <debarshir src gnome org>]

commit 9c2127b48fd6573b893de0654702de600646f822
Author: Debarshi Ray <debarshir gnome org>
Date:   Fri Dec 2 10:46:31 2016 +0100

    Update to latest libgd
    
    We need GdMainBox.
    
    Bump minimum GTK+ version to 3.22.6.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=690623

 configure.ac |    3 ++-
 libgd        |    2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index f5eccc0..7ecb8f0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -37,7 +37,7 @@ GFBGRAPH_MIN_VERSION=0.2.1
 GLIB_MIN_VERSION=2.44.0
 GOA_MIN_VERSION=3.8.0
 GRILO_MIN_VERSION=0.3.0
-GTK_MIN_VERSION=3.19.1
+GTK_MIN_VERSION=3.22.6
 
 AX_REQUIRE_DEFINED([IT_PROG_INTLTOOL])
 IT_PROG_INTLTOOL([0.50.1])
@@ -110,6 +110,7 @@ PKG_CHECK_MODULES(TRACKER, [tracker-control-1.0 tracker-sparql-1.0])
 AX_REQUIRE_DEFINED([LIBGD_INIT])
 LIBGD_INIT([
   gtk-hacks
+  main-box
   main-icon-view
   main-view
   static
diff --git a/libgd b/libgd
index 78a910b..58849a8 160000
--- a/libgd
+++ b/libgd
@@ -1 +1 @@
-Subproject commit 78a910b0440854f97af80a9b0bd8cb4a3d3a06e1
+Subproject commit 58849a8f31a2f99f514a5a5d365f0e9e326a0b18