Add option to hide join/part hostmasks

src/fe-gtk/menu.h

@@ -39,6 +39,7 @@ void menu_bar_toggle (void);
 void menu_add_plugin_items (GtkWidget *menu, char *root, char *target);
 void menu_change_layout (void);
 void menu_update_quit_accel (void);
+gboolean menu_key_action (const char *name, guint keyval, GdkModifierType state);
 
 void menu_set_away (session_gui *gui, int away);
 void menu_set_fullscreen (session_gui *gui, int fullscreen);