Module import dependency graph pictures

[Toby Dickenson]

What every large python project needs.... pretty pictures of the module 
dependency graph.

http://www.tarind.com/depgraph.html

.....a few scripts to glue modulefinder.py into graphviz, producing import 
dependency pictures pretty enough for use as a poster, and containing enough 
information to be a core part of my process for understanding physical 
dependencies.