header and src files of each defined detector are now
  symlinked in the include and src directory instead of
  being hard copied

* Remove compilation warnings in Tigree.cc

   + geant4 files are kept in the include and src directories
   + one directory is created for each detector. This directory
     contains the associated headers and sources files
   + a script directory is created with some scripts allowing the
     conditional compilation

 * Add #ifdef statements in DetectorConstruction.cc file
   + this applies to each detector header

 * Move G4MultiFunctionnalDetector.hh header from Sharc.cc to 
   Sharc.hh

  this branch is dedicated to the conditional compilation of NPS

- Sin theta was not applied to the cross section

 - In the case of multiinteraction in the same volume, the scorer was keeping only the last energy deposit, instead of summing them
 - The threshold has been move in the Read sensitive and is no longer in the scorer, as the energy deposit can be down in multiple step each of them below threshold and be ignored if the threshold is applyed individually.

* Fixing GeometricalEfficiency.C macro to fit new TInitialCondition
* Adding support for TInitialCondition in Sharc

 - The DetectorThickness token has no effect

 - Beam was creating a never used Initial Condition
 - The hollow branch appear only on Linux(?) computer...

 - The target was not created and thus the Material not register in the dE/dx table. So NPS crash when trying to write the table. The table is no longer written if the size of the target is 0

* Fixing issue when EventGeneratorIsotropic is used for gamma emission

 - NPS was giving conflict between NP system of Unit and CLHEP one, this is was fixed by a nested ifdef on HEP_SYSTEM_OF_UNIT

* Fixing issue with S1:
 - in Detector Manager a tipo was desabling the condition compilation of S1

* Fixing issue in Isotropic:
 - conflict when the particle was light nuclei given by its name (eg proton instead of 1H)
 - Problem is fixed and user can use gamma, proton, deuton, triton and alpha spelling

   by the Hyde2 project

   in NPSimulation

 - Fixing bug in particle and gamma dicay causing seg fault when leaving the program
 - fixing bug in NP function caussing 2Dgaussian to be stuck for sigmaX=sigmaY=0 case

* clean up the Physics list file (remove trailling comment and reindent)
* fix cout issue in event action

 - Put 2009-2013 copyright date
 - Change the place of the ifndef position to avoid multiple inclusion of comment line

 - Fixing bug on DetNbr for BOX
 - Adding PAD
 - Adding QQQ

 - Basic Test indicate that the logic work well
 - Still requiered a real analysis to be all check

 - Placement of Box detector Ok for Pad and Single layer case
 - Restauring original colour of the PCB

- Setp 1: remove the problematic file