Don't include destroyed AgentClients when selecting which client to use to send messages.
Merge pull request #487 from racker/jirwin/check_for_destroyed_clients_before_sending_message

Don't include destroyed AgentClients when selecting which client to use ...
add license files
bump base for freebsd fix
bump for travis
skip disk check on travis
Merge branch 'master' into features/dbops_via_aep