Added AssociationRole and Operation (derived from ISO 19109). We are not yet sure about what will be the final
version of those types, but we are better to add them now in order to allow our code to take them in account.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK8@1593553 13f79535-47bb-0310-9956-ffa450edef68