[gnome-control-center] Update submodules

[Jasper St. Pierre <jstpierre src gnome org>]

commit edf042a16642f0b92e262dd0306706c326621746
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Sun Jun 16 15:13:38 2013 -0400

    Update submodules

 egg-list-box |    2 +-
 libgd        |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/egg-list-box b/egg-list-box
index 1810c05..a3b21aa 160000
--- a/egg-list-box
+++ b/egg-list-box
@@ -1 +1 @@
-Subproject commit 1810c054ef97833863deff909c46d34da7214bf2
+Subproject commit a3b21aa41c86d9d3f43cf642ac11103b61864e0a
diff --git a/libgd b/libgd
index 5bcd11f..b66ca33 160000
--- a/libgd
+++ b/libgd
@@ -1 +1 @@
-Subproject commit 5bcd11f1add8964ef0a056b2b7051bb97575a94b
+Subproject commit b66ca33babf4865240d9d1fa732da4c90e49f536