(x_figure_window_size): Handle `-' for top or left.
(Fx_parse_geometry): Handle one element at a time. Give `-' when appropriate. (x_figure_window_size): Allow just height or just width. (Fx_create_frame): Use XNegative and YNegative to set win_gravity. [USE_X_TOOLKIT] (x_window): Use XNegative and YNegative to set win_gravity. Pass new arg to x_calc_absolute_position.
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