Check in missing project 6 for tests

The test will still work since we have zipped the workspace up but
for furture analysis we do need this file.

See #33 and #35.
ASTVisitor to locate variable bindings

See #33.
Create a simplified facade that uses SimpleNameBindingFinder

Makes it more convenient than having to create a new instance of
SimpleNameBindingFinder each time.

See #33.
Allow transformation between DataDependence and IBinding

We add a convenience method for transforming from DataDependence ->
IBinding (regardless of the type) for now.

See #33.