(svn r20670) -Add: support for action F

-Add: a window to select (NewGRF) objects

src/newgrf_gui.cpp

@@ -1530,6 +1530,9 @@ static void NewGRFConfirmationCallback(Window *w, bool confirmed)
 		nw->avails.ForceRebuild();
 
 		w->InvalidateData();
+
+		ReInitAllWindows();
+		DeleteWindowByClass(WC_BUILD_OBJECT);
 	}
 }