update licenses and add RAT configuration

git-svn-id: https://svn.apache.org/repos/asf/continuum/trunk@1599949 13f79535-47bb-0310-9956-ffa450edef68
adjust source release directory and filename

git-svn-id: https://svn.apache.org/repos/asf/continuum/trunk@1599951 13f79535-47bb-0310-9956-ffa450edef68