register1-dot.ll -- new report for Lifelines genealogy program

This week I whipped up a new report, register1-dot.ll, to use with Lifelines. It creates a directed graph of escendants from a particular individual. You then use 'dot' from the AT&T graphviz toolset to create a GIF, PostScript or other file.

Here is a graph from my immigrant ancestor Anthony Vincent Nozell.
I've removed the names of all living persons, but you get the idea.

"Descendant graph of Anthony Vincent Nozell (click for fullsize, it *is* legible)"

It is based on the existing register1.ll and register-tex.ll reports
and there is plenty of room for improvement.