Fix up headerless symbols

Some symbols are exported from GTK+, but do not appear in any
headers. For these, use _GDK_EXTERN in the source file to make
sure they are exported.

gtk/gtkbindings.c

@@ -138,6 +138,7 @@
 
 
 #define GTK_TYPE_IDENTIFIER (gtk_identifier_get_type ())
+_GDK_EXTERN
 GType gtk_identifier_get_type (void) G_GNUC_CONST;
 
 

gtk/gtkgladecatalog.c

@@ -19,6 +19,9 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
+
+#include "config.h"
+
 #include "gtkpathbar.h"
 #include "gtkcolorswatchprivate.h"
 #include "gtkcolorplaneprivate.h"
@@ -35,7 +38,7 @@ GType _gtk_scale_button_scale_get_type (void);
  * and is used to ensure the private types for use in Glade while
  * editing UI files that define GTK+'s various composite widget classes.
  */
-void
+_GDK_EXTERN void
 gtk_glade_catalog_init (const gchar *catalog_name)
 {
   g_type_ensure (GTK_TYPE_PATH_BAR);

gtk/gtksettings.c

@@ -52,13 +52,9 @@
 #include "gtkwin32themeprivate.h"
 #endif
 
-#undef GDK_DEPRECATED
-#undef GDK_DEPRECATED_FOR
-#define GDK_DEPRECATED
-#define GDK_DEPRECATED_FOR(f)
-
 #include "deprecated/gtkrc.h"
 
+G_GNUC_BEGIN_IGNORE_DEPRECATIONS
 
 /**
  * SECTION:gtksettings

gtk/gtkthemingengine.c

@@ -209,6 +209,7 @@ struct GtkThemingModuleClass
 #define GTK_THEMING_MODULE(o)    (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_THEMING_MODULE, GtkThemingModule))
 #define GTK_IS_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_THEMING_MODULE))
 
+_GDK_EXTERN
 GType gtk_theming_module_get_type (void);
 
 G_DEFINE_TYPE (GtkThemingModule, gtk_theming_module, G_TYPE_TYPE_MODULE);