[maven-source-plugin/f18] (3 commits) ...Install license files

[Mikolaj Izdebski]

Summary of changes:

  ec82f32... Update to latest upstream. (*)
  451d5dc... Add BR on org.apache.maven.surefire:surefire-junit4. (*)
  deff40a... Install license files

(*) This commit already existed in another branch; no separate mail sent