1) New class "AliMUONRefitter" to:

1) New class "AliMUONRefitter" to:
   - re-clusterize the ESD clusters from the attached ESD pad
   - refit the ESD tracks using the attached ESD clusters or
     the re-clusterized ones
2) The macro MUONRefitter.C provides a complete example using
   this new class (including modification of the digit charge
   before refitting, comparison of results with the original data
   and storage of these results in a new AliESDs.root file).
(Philippe P.)