Initial implementation of the CMIS Output Connector

After we have discussed about the possibility to have some output connector dedicated to migrate contents from a specific repo to another one, this is the first implementation for the CMIS protocol.

The discussion is the following:
http://mail-archives.apache.org/mod_mbox/manifoldcf-dev/201611.mbox/%3CCAEO2op-bjNv4xSTPwGN%3DV2v47Sy8d%2BwKNtd1RpV2PC85y_JAgw%40mail.gmail.com%3E

The main scenario is migrate contents from any repository type to a CMIS-compliant repo.