Add multi-daemon testing code (which currently fails)

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/branches/CONNECTORS-781@1547144 13f79535-47bb-0310-9956-ffa450edef68
Fix cleanup bug.

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/branches/CONNECTORS-781@1547166 13f79535-47bb-0310-9956-ffa450edef68