DynamicMultiBody::m_JacobianOfTheCoM is moved from private to protected   to override computeJacobianCenterOfMass()
DynamicMultiBody::m_JacobianOfTheCoM is moved from private to protected
  to override computeJacobianCenterOfMass()

jrl-umi3218/jrl-dynamics,jrl-umi3218/jrl-dynamics