Add james-wrapper to avoid Apache James snapshots - temporary until newer versions are released

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1620590 13f79535-47bb-0310-9956-ffa450edef68
Temporarily copy James code here, until that's released

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1620591 13f79535-47bb-0310-9956-ffa450edef68