* include/Makefile.am,
    * src/Makefile.am: move headers for include to src,
    * src/parser.cc,
    * include/hpp/core/parser.hh: implement Parser::buildDummyDevice
      for tests,
    * src/freeflyer-joint.hh,
    * src/joint-properties.cc,
    * src/joint-properties.hh,
    * src/rotation-joint.hh,
    * src/translation-joint.hh:  insert class into io namespace,