[gnome-photos] Add libgd submodule

[Debarshi Ray <debarshir src gnome org>]

commit d28660bacd4932e14937ebf7e041b67d96e40f3c
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Sat Nov 10 11:46:45 2012 +0100

    Add libgd submodule

 .gitmodules |    3 +++
 libgd       |    1 +
 2 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..303eb9b
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "libgd"]
+	path = libgd
+	url = ../libgd
diff --git a/libgd b/libgd
new file mode 160000
index 0000000..6318d52
--- /dev/null
+++ b/libgd
@@ -0,0 +1 @@
+Subproject commit 6318d529754dbb2a5f95d3a546340f476b37bcc4