GDA-3672 Add command info package to API
GDA-3672 Add command info access to Jython server API
GDA-3672 Add initial command info implementation to core
GDA-3672 Access command info through InterfaceProvider
GDA-3672 Add observer management for command info
GDA-3672 Add support for command info event and thread type
GDA-3672 Make command info event serializable
GDA-3672 Fix references to command info event and type
GDA-3672 Update corba support for getCommandThreadInfo from Jython
GDA-3672 Add event details and notifications for command info

- refine info details
- define event types
- basic scheme for generating events
GDA-5766 launchers no longer need builders.dawn