fix some bug in gjk; add continuous collision, still need more test

include/fcl/BVH/BVH_model.h

include/fcl/broadphase/hierarchy_tree.hxx

include/fcl/ccd/conservative_advancement.h

include/fcl/ccd/motion.h

include/fcl/ccd/motion_base.h

include/fcl/collision.h

include/fcl/collision_data.h

include/fcl/collision_object.h

include/fcl/continuous_collision.h

include/fcl/distance.h

include/fcl/intersect.h

include/fcl/math/transform.h

include/fcl/narrowphase/gjk.h

include/fcl/narrowphase/gjk_libccd.h

include/fcl/narrowphase/narrowphase.h

include/fcl/penetration_depth.h

include/fcl/shape/geometric_shapes.h

include/fcl/shape/geometric_shapes_utility.h

include/fcl/traversal/traversal_node_base.h

include/fcl/traversal/traversal_node_bvh_shape.h