restore 1.6 build

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1543217 13f79535-47bb-0310-9956-ffa450edef68
add missing ASF header

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1543218 13f79535-47bb-0310-9956-ffa450edef68