Use new Getdown which can install JVMs properly on a Mac.
Check all source directories for newness on a reindex check.

Really I need to check every source file, but I'm not quite ready to incur that
level of expense. Most likely I'll just learn to love the bomb, but I may also
just reindex on failed lookup instead.
Don't scan dir for newness if it doesn't exist.
Fixed issue with migration, also report DB dir.
Wrap long line.
Introduced notion of project "family".

In a multi-module project, all (transitive) children of the top-most parent are
a family. When searching for a symbol, we search a project's family as well as
its dependencies (but as with depends, we don't search the depends of our
family members).

This allows one to easily jump around within a family of modules, which one is
often wont to do.