Pull up more CONNECTORS-1077-related work from trunk.

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/branches/dev_1x@1633109 13f79535-47bb-0310-9956-ffa450edef68
Pull up more CONNECTORS-1070-related changes from trunk.

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/branches/dev_1x@1633110 13f79535-47bb-0310-9956-ffa450edef68