Fix inclusion of Pinocchio headers (before boost)

tests/spline-path.cc

@@ -15,6 +15,7 @@
 // hpp-core. If not, see <http://www.gnu.org/licenses/>.
 
 #define BOOST_TEST_MODULE spline_path
+#include <pinocchio/fwd.hpp>
 #include <boost/test/included/unit_test.hpp>
 
 #include <hpp/core/path/spline.hh>

tests/test-solid-solid-collision.cc

@@ -17,7 +17,7 @@
 // <http://www.gnu.org/licenses/>.
 
 #define BOOST_TEST_MODULE solid_solid_collision
-
+#include <pinocchio/fwd.hpp>
 #include <boost/test/included/unit_test.hpp>
 
 #include <limits>