Cosmic tracker as an intergral part of the central ALICE reconstruction.

Cosmic tracker as an intergral part of the central ALICE reconstruction.
Cosmic tracker called during the AliTPCtrackerMI::RefitInward.

Changes for the cosmic tracking codes necessary to be used in the compiled code

M      CMakelibTPCrec.pkg             - Adding cosmic tracking classes
M      TPCrecLinkDef.h                - Adding cosmic tracking classes
M      AliTPCtrackerMI.cxx            - Invoke cosmic tracker ::FindCosmics during refit inward

M      AliCosmicTracker.h             -
M      AliCosmicTracker.cxx           -
M      AliTPCCosmicTrackfit.cxx       - Using function instaead of static data members for constants
M      AliTPCCosmicTrackfit.h         -
M      AliTPCCosmicUtils.h            - Coding Convention
M      AliTPCCosmicUtils.cxx          -

(Xianguo)