Removed some unneeded dependencies to speed up compile.

Code "cleanup": Functions that create a button now return its address.
This helps reduce the number of files that use the globals "Fenetre_Liste_boutons_*"


git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@642 416bcca6-2ee7-4201-b75f-2eb2f807beb1

windows.h

@@ -25,6 +25,7 @@
 #include "struct.h"
 
 void Afficher_curseur(void);
+void Effacer_curseur(void);
 
 void Remapper_ecran_apres_changement_couleurs_menu(void);
 void Calculer_couleurs_menu_optimales(struct Composantes * Palette);