Create a branch to work on CONNECTORS-271

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/branches/CONNECTORS-971@1603834 13f79535-47bb-0310-9956-ffa450edef68
Schema changes and code, except for upgrade

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/branches/CONNECTORS-971@1603872 13f79535-47bb-0310-9956-ffa450edef68
Add upgrade

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/branches/CONNECTORS-971@1603880 13f79535-47bb-0310-9956-ffa450edef68
Fix for CONNECTORS-971.  WARNING: Schema change!!

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/trunk@1603886 13f79535-47bb-0310-9956-ffa450edef68