Consolidate separate calls to set() in to one call for interpreter efficiency. * rgbplot.m, annotation.m, legend.m, orient.m, colorbar.m, __bar__.m, __contour__.m, __errplot__.m, __quiver__.m, __stem__.m, shrinkfaces.m, __actual_axis_position__.m, hgtransform.m, __gnuplot_draw_axes__.m, __gnuplot_draw_figure__.m: Consolidate separate calls to set() in to one call for interpreter efficiency.

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