Events now generally carry the unique ID of the backend that is given
during initialization; there are a few more functions and other
bugfixes.
A few netcontrol tests are still broken (mostly due to a pcap update in
msater).
*rename module from Openflow to OpenFlow
*add match_conn function to convert conn_id to openflow match
*add a few things back into the openflow records like... table_id
*and - a test
