more paranoid FetchDataFromFile and more generic unpacking
- when calling make_data_with_FetchDataFromFile, require the type to be specified
- enable a generic MCCaloHit and MCHit unpacker
- replace dedicated CaloHypo and Track unpackers by instances of generic unpackers
goes together with Moore!2831 (merged), Analysis!1042 (merged), Rec!3700 (merged)
Edited by Gerhard Raven