+ 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

 - User can no desable all branch except the one concerning the NPA detector in order to improve execution speed

   + exit(1) statement has been added in the DisplayHelp() method from the
     NPOptionManager class

   + bug was in the correspondance between strip number and coordinates
   + excitation energy is now well reconstructed

* Add Destroy method in the singleton class NPOptionManager
   + it is used in the Gaspard analysis code

* Change default ROOT file name in general analysis macros
   + mySimul.root is now myResult.root

* Add DumpStrippingScheme method in GaspardTracker
   + it allows to dump the correspondance between strips and coordinates
     for any detector part of Gaspard
   + for the moment indexes are hardcoded for annular detector (should be
     improved)

 - A singleton class to make more easy to use NPTool Prog.
 - Class is implemented and tested on one Ananlysis Project