will fix some compile Problems on gcc-4.1

Joerg Bornkessel <hd_brummy@gentoo.org> 29 Sep 2006

diff -Naur GUIlib-1.1.0.orig/GUI_menu.h GUIlib-1.1.0/GUI_menu.h
--- GUIlib-1.1.0.orig/GUI_menu.h	2006-09-29 19:38:54.767324511 +0200
+++ GUIlib-1.1.0/GUI_menu.h	2006-09-29 19:40:13.464242760 +0200
@@ -39,9 +39,9 @@
   virtual void AddSubitem(GUI_Menuitem *newitem);
   virtual GUI_Menuitem* GetSubItem(int Aid);
 
-  GUI_status GUI_Submenu:: MouseDown(int x, int y, int button);
-  GUI_status GUI_Submenu::MouseUp(int x,int y,int button);
-  GUI_status GUI_Submenu::MouseMotion(int x,int y,Uint8 state);
+  GUI_status MouseDown(int x, int y, int button);
+  GUI_status MouseUp(int x,int y,int button);
+  GUI_status MouseMotion(int x,int y,Uint8 state);
 
   inline virtual int GetSubmenuId()
     {return submenuid;}