Hatched Fill Patterns Plus

Modified APPLYHATCH to allow for variable resolution output for printing.

Original APPLYHATCH allows for the conversion of a color figure to a B&W hatched figure, ideal for export for standanrd printing, as a screen resolution bitmap image. APPLYHATCH_PLUS allows for DPI selection, resulting in hires images for quality printing. The size of the hatch matrix can also be varied creating tighter or larger hatches.