* mln/util/tracked_ptr.hh
	(mln::util::tracked_ptr<T>::tracked_ptr(T*))
	(mln::util::tracked_ptr<T>::operator=(T*))
	(mln::util::tracked_ptr<T>::run_() const):
	Remove useless typedefs.
	(mln::util::tracked_ptr<T>::operator=(const tracked_ptr<T>&))
	(mln::util::tracked_ptr<T>::operator=(T*))
	(mln::util::operator<<(std::ostream& ostr, const tracked_ptr<T>&)):
	Check invariants in more places.

git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@4579 4aad255d-cdde-0310-9447-f3009e2ae8c0