* mln/core/complex_psite.hh, mln/core/p_complex.hh: New.
	* mln/core/face.hh: s/mln_assertion/mln_precondition/.
	(mln::face_handle<N, D>::face_handle): Statically ensure N is
	compatible with D in ctors.
	* tests/core/p_complex.cc: New test.
	* tests/core/Makefile.am (check_PROGRAMS): Add p_complex.
	(p_complex_SOURCES): New.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@2122 4aad255d-cdde-0310-9447-f3009e2ae8c0