to allow comparison with Sieglinde (which only uses the first OM hit).
Also IceDwalk now introduces a device into the event named "IceDwalk"
which contains the values of all the used reconstruction parameters.
+25-oct-2006 NvE Spread of Psi median included in track fit statistics of IceChi2
+ and IcePandel.
+ Processing parameters of IceCalibrate, IceXtalk, IceCleanHits, IceChi2
+ and IcePandel included as the corresponding devices in the event structure.
+15-nov-2006 NvE Separate treatment of v_phase and v_group introduced in IceDwalk, IceChi2
+ and IcePandel to improve time residuals (thanks to George Japaridze).
+ Also IceLinefit extended for specification of maximum number of hits per OM
+ and automatic introduction of a device into the event named "IceLinefit"
+ which contains the values of all the used reconstruction parameters and
+ the beta value (v/c) of the reconstructed track.
+16-nov-2006 NvE Class IceDwalk renamed to IceDwalkx to provide a Sieglinde-like direct
+ walk-II approach. The remaining class IceDwalk will provide a more
+ sophisticated approach with more physics driven selection criteria.
+23-nov-2006 NvE Improved version of IceDwalk installed. Note that the old algorithm is
+ still available as IceDwalkx.