* mln/topo/skeleton/breadth_first_thinning.hh
	(mln::topo::skeleton::breadth_first_thinning): Add a parameter I.
	Take an Image<I> as argument instead of a bin_2complex_image3df.
	Adjust return type.
	Pass the `detach' function as an additional argument.
	Adjust and complete the documentation.
	* apps/statues/mesh-complex-skel.cc (main): Adjust caller.
	* mln/topo/detach.hh (mln::topo::detach<D, G, V>): Get rid of
	parameter V (replace it by `bool'), and turn the signature of
	the function into...
	(mln::topo::detach<D, G>): ...this.
	Remove a (now) useless precondition.

git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@3639 4aad255d-cdde-0310-9447-f3009e2ae8c0