Add dependency on api from core module

git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/branches/gsoc@1548681 13f79535-47bb-0310-9956-ffa450edef68
Add constructor taking license family

git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/branches/gsoc@1548682 13f79535-47bb-0310-9956-ffa450edef68