[gtk+] Fix some implicit declaration warnings

[Rico Tzschichholz <ricotz src gnome org>]

commit 4a43c062ac45ba79cba3fce972e8f2dce4391181
Author: Rico Tzschichholz <ricotz t-online de>
Date:   Fri Nov 11 13:06:56 2011 +0100

    Fix some implicit declaration warnings
    
    There were some includes of gtkmain.h missing

 gtk/gtklabel.c     |    1 +
 gtk/gtkmenushell.c |    1 +
 gtk/gtkrange.c     |    1 +
 3 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index 26fb56a..6d543f7 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -39,6 +39,7 @@
 #include "gtkintl.h"
 #include "gtkseparatormenuitem.h"
 #include "gtktextutil.h"
+#include "gtkmain.h"
 #include "gtkmenuitem.h"
 #include "gtkmenushellprivate.h"
 #include "gtknotebook.h"
diff --git a/gtk/gtkmenushell.c b/gtk/gtkmenushell.c
index c901814..f5fa1c6 100644
--- a/gtk/gtkmenushell.c
+++ b/gtk/gtkmenushell.c
@@ -42,6 +42,7 @@
 #include "gtkbindings.h"
 #include "gtkkeyhash.h"
 #include "gtklabel.h"
+#include "gtkmain.h"
 #include "gtkmarshalers.h"
 #include "gtkmenubar.h"
 #include "gtkmenuitemprivate.h"
diff --git a/gtk/gtkrange.c b/gtk/gtkrange.c
index 69b959b..57dc873 100644
--- a/gtk/gtkrange.c
+++ b/gtk/gtkrange.c
@@ -30,6 +30,7 @@
 #include <stdio.h>
 #include <math.h>
 
+#include "gtkmain.h"
 #include "gtkmarshalers.h"
 #include "gtkorientableprivate.h"
 #include "gtkrange.h"