[gnome-photos] Add libgd to ACLOCAL_AMFLAGS

[Debarshi Ray <debarshir src gnome org>]

commit deb9a93de15420f8e873bdfc6451889a2279066e
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Sat Nov 10 11:55:30 2012 +0100

    Add libgd to ACLOCAL_AMFLAGS

 Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index df55843..1068e54 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,3 +1,5 @@
+ACLOCAL_AMFLAGS = -I m4 -I libgd ${ACLOCAL_FLAGS}
+
 SUBDIRS = . data libgd src po
 
 INTLTOOL_FILES = \