first prototype of vertex aware tof
modify EcalHitMaker to get the event vertex and use it to compute the TOF
Merge pull request #2 from franzoni/gianluca_tofdev

Gianluca tofdev: it seems true that I am doing "importing Gianluca's development branch into: merge-tofdev-with-true-time-into-recHit"   => approving the pull request #2