Use the resolved artifacts for references

For some reason, the resolver is not including all of the artifacts in
project.getDependencyArtifacts. This might need some revision, but here we
can quite clearly obtain the right set and pass it on to the call that
requires it.

git-svn-id: https://svn.apache.org/repos/asf/incubator/npanday/trunk@1572447 13f79535-47bb-0310-9956-ffa450edef68