(make_window): Initialize window's min_hscroll.
(Fset_window_hscroll): Set window's hscroll and min_hscroll. (set_window_buffer, temp_output_buffer_show): Set min_hscroll to zero. (struct saved_window): New member min_hscroll. (SAVED_WINDOW_VECTOR_SIZE): Set to 17. (Fset_window_configuration): Set window's min_hscroll. (save_window_save): Save window's min_hscroll. (compare_window_configurations): Compare min_hscroll values.
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