This adds a report of nodes, handles some errors better, adds
some helpful output, cleans up some abspath calls, and
updates which modules and/or dependencies we temporarily are
ignoring for the report.
Rather than having a bunch of regexes to look for, we just
have a single regex for a function call. And now we process
line by line, which allows us to more easily ignore comments.
This tools lets us view circular dependencies in our JS
code. It does regex parsing, so it has a few false positives,
but it's an early draft of the tools. Steve Howell helped
with this commit.