* tests/value_int_u8.cc: Augment.
	* mln/literal/origin.hh: New.
	* tests/point2d.cc (zero): Replace by...
	(origin): ...this.
	* mln/core/point.hh,
	* mln/core/dpoint.hh (operator=): Handle literals.
	Update.
	* mln/core/ops.hh: Add FIXMEs.
	* mln/literal/all.hh: Update.
	* mln/literal/zero.hh: Fix typo in doc.
	* mln/value/int_s.hh: Handle literals.
	* mln/value/int_u.hh (zero, one): Remove variables.
	* mln/value/concept/scalar.hh, 
	* mln/make/w_window_line.hh,
	* mln/morpho/hit_or_miss.hh: Update with literals.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@1306 4aad255d-cdde-0310-9447-f3009e2ae8c0