-/*
-$Log$
-Revision 1.21 2003/03/15 19:48:01 morsch
-AliDecayerPythia replaced by AliDecayer
-
-Revision 1.20 2003/01/28 15:29:07 morsch
-Spelling in name corrected.
-
-Revision 1.19 2003/01/14 10:50:18 alibrary
-Cleanup of STEER coding conventions
-
-Revision 1.18 2002/12/11 11:58:11 morsch
-Bug in formula for pi0 energy for decay corrected.
-
-Revision 1.17 2002/12/10 17:44:57 morsch
-Correct mother child relation for pi0.
-
-Revision 1.16 2002/11/28 11:46:15 morsch
-Don't track pi0 if already decayed.
-
-Revision 1.15 2002/11/28 11:38:53 morsch
-Typo corrected.
-
-Revision 1.14 2002/11/26 17:12:36 morsch
-Decay pi0 if requested.
-
-Revision 1.13 2002/10/14 14:55:35 hristov
-Merging the VirtualMC branch to the main development branch (HEAD)
-
-Revision 1.11.4.1 2002/07/24 08:56:28 alibrary
-Updating EVGEN on TVirtulaMC
-
-Revision 1.12 2002/06/19 06:56:34 hristov
-Memory leak corrected
-
-Revision 1.11 2002/03/20 10:21:13 hristov
-Set fPtMax to 15 GeV in order to avoid some numerical problems
-
-Revision 1.10 2001/10/15 16:44:46 morsch
-- Possibility for vertex distribution truncation.
-- Write mc header with vertex position.
-
-Revision 1.9 2001/07/27 17:09:36 morsch
-Use local SetTrack, KeepTrack and SetHighWaterMark methods
-to delegate either to local stack or to stack owned by AliRun.
-(Piotr Skowronski, A.M.)
-
-Revision 1.8 2001/07/20 11:03:58 morsch
-Issue warning message if used outside allowed eta range (-8 to 8).
-
-Revision 1.7 2001/07/17 12:41:01 morsch
-- Calculation of fraction of event corresponding to selected pt-range corrected
-(R. Turrisi)
-- Parent weight corrected.
-
-Revision 1.6 2001/05/16 14:57:10 alibrary
-New files for folders and Stack
-
-Revision 1.5 2000/12/21 16:24:06 morsch
-Coding convention clean-up
-
-Revision 1.4 2000/11/30 07:12:50 alibrary
-Introducing new Rndm and QA classes
-
-Revision 1.3 2000/10/02 21:28:06 fca
-Removal of useless dependecies via forward declarations
-
-Revision 1.2 2000/07/11 18:24:55 fca
-Coding convention corrections + few minor bug fixes
-
-Revision 1.1 2000/06/09 20:20:30 morsch
-Same class as previously in AliSimpleGen.cxx
-All coding rule violations except RS3 corrected (AM)
-
-*/