Added gtk_window_group_list_windows override
Added missing override gtk_window_group_list_windows override
Changed error message on test file for GtkWindowGroup->list_windows
g_list_free(list) added
Fixed compile with 5.5. Added VC11 compatibility

*renamed generator.php and related functions/classes to get around
keyword issue in > 5.5
add new override for gtk_window_group_list_windows
by xetrum
Fix generator now being a reserved word and support newer MSVC versions