New ECAL Unpacker code , off in sequences for the time being

New Ecalunpacker module from Philippe Gras. Not used in standard sequences for this PR. We plan to activate it at a later time.
I tried to google for the printMacros, but didn't find it anywhere.
If it's a legally standalone open project, it should be available somewhere, otherwise it's just CMS software
and the copyright doesn't seem appropriate