Added libgd as a submodule, until GTK+ 3.10 comes out

libgd provides some neat widgets, like a header similar to
GTK+ 3.10's GtkHeaderBar, which comes in handy when generating the
window headers.

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "libgd"]
+	path = libgd
+	url = git://git.gnome.org/libgd

Makefile.am

@@ -1,5 +1,5 @@
 ACLOCAL_AMFLAGS = -I m4
-SUBDIRS = src po docs/reference/astrognome
+SUBDIRS = libgd src po docs/reference/astrognome
 
 EXTRA_DIST = config.rpath m4/ChangeLog
 

autogen.sh

@@ -5,6 +5,7 @@ srcdir=`dirname $0`
 test -z "$srcdir" && srcdir=.
 
 PKG_NAME="astrognome"
+ACLOCAL_FLAGS="-I libgd $ACLOCAL_FLAGS"
 
 (test -f $srcdir/configure.ac \
   && test -f $srcdir/src/astrognome.c) || {

configure.ac

@@ -48,8 +48,14 @@ PKG_CHECK_MODULES([GTK], [gtk+-3.0])
 PKG_CHECK_MODULES([SWE_GLIB], [swe-glib])
 AC_CONFIG_MACRO_DIR([m4])
 
+LIBGD_INIT([
+    header-bar
+    static
+])
+
 AC_CONFIG_FILES([
     Makefile
+    libgd/Makefile
     src/Makefile
     po/Makefile.in
     data/geonames/Makefile