Use relative links for local files

git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/trunk@1501617 13f79535-47bb-0310-9956-ffa450edef68
A bit more detail

git-svn-id: https://svn.apache.org/repos/asf/creadur/rat/trunk@1501759 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'upstream/trunk' into trunk