Create a branch to work on CONNECTORS-911

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/branches/CONNECTORS-911@1580648 13f79535-47bb-0310-9956-ffa450edef68
Do some work, as yet incomplete, on revamping webconnector to be compatible with httpclient 4.3

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/branches/CONNECTORS-911@1580664 13f79535-47bb-0310-9956-ffa450edef68
Merge in contents of CONNECTORS-911 branch

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/branches/CONNECTORS-911-2@1584050 13f79535-47bb-0310-9956-ffa450edef68