Replace Box::side by Box::halfSide.

include/hpp/fcl/shape/geometric_shape_to_BVH_model.h

include/hpp/fcl/shape/geometric_shapes.h

src/narrowphase/details.h

src/narrowphase/gjk.cpp

src/shape/geometric_shapes_utility.cpp

test/test_fcl_bvh_models.cpp

test/test_fcl_geometric_shapes.cpp

test/test_fcl_obb.cpp