Test doxygen/sphinx links

Below some examples on how to write internal links to siconos objects in sphinx documents (rst).

• Link to a siconos class or a struct:

  Try to link to :class:`DynamicalSystem`
  

  Result :

  Try link to DynamicalSystem

• Link to a file (programs listing):

  Try to link to :ref:`pgm_kernel_src_modelingTools_DynamicalSystem.hpp`
  

  Result :

  Try to link to Program listing for file kernel/src/modelingTools/DynamicalSystem.hpp

• Link to a file (documentation):

  Try to link to :ref:`file_kernel_src_modelingTools_DynamicalSystem.hpp`
  

  Result :

  Try to link to File kernel/src/modelingTools/DynamicalSystem.hpp

• Link to a class method :

  Try to link to :func:`Simulation::nextStep`
  

  Result :

  Try to link to Simulation::nextStep()

• Link to a function :

  Try to link to :func:`cs_dl_norm`
  

  Result :

  Try to link to cs_dl_norm()