- Sin theta was not applied to the cross section

 - fixing couple of bug
 - remove some warning
 - enhance performance

 * Add #ifdef statements in NPSimulation - DetectorConstruction
   however, if a subset of detectors is selected with ./configure
   from NPLib, it breaks NPSimulation compilation since all projets
   are compiled by default in NPSimulation

* Progress on the Sharc detector
* Correcting bug on the particle stack: Initial condition was not cleared at end of event, generating massive root file

   + when input files are not found, does not exist sytematically
   + it is done manually in Simulation.cc

   + TAsciiFile classes containing input files are now files here and not
     in Simulation.cc anymore

   + search for input files in the $NPTOOL/Inputs/* and local directories
     is now performed in this class
   + this search was done previously in DetectorConstruction.cc and
     PrimaryGeneratorAction.cc files. these files have been modified
     accordingly.
   + If input files are not found, program exits

   + this class allows to store in the ROOT output file the input files
     used by NPSimulation and NPAnalysis

   + D. Beaumel physics case (Pygmee Dipole Resonance)

* Remove useless detector declarations in gaspHyde.detector file

* Add NPOptionManager->Destroy in Simulation.cc

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