Create a branch to work on CONNECTORS-1074.

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/branches/CONNECTORS-1074@1632227 13f79535-47bb-0310-9956-ffa450edef68
Move tika-core to a dependency of mcf-core

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/branches/CONNECTORS-1074@1632238 13f79535-47bb-0310-9956-ffa450edef68
Use tika to implement extension mapping

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/branches/CONNECTORS-1074@1632283 13f79535-47bb-0310-9956-ffa450edef68
Fix for CONNECTORS-1047.

git-svn-id: https://svn.apache.org/repos/asf/manifoldcf/trunk@1632289 13f79535-47bb-0310-9956-ffa450edef68