setting of ZdcAnalysisTool handle deferred, added check on ZDC errors in EventInfo
This MR has two purposes:
- if the reprocZdc property is false, then completely defer the definition of the ZdcAnalysisTool handle. Otherwise, the constructor and initialize were being "forced" on me (for reasons I could not explain!)
- Check the ForwardDet error state from the EventInfo in the Ntuple processing, and skip event (with error message) if in xAOD::EventInfo::Error state. This is strictly set by ZDC at this moment, but the EventInfo error word has further information.