* mln/accu/image/set_value.hh (set_value_tests): New.
	(set_value, set_value_fastest, set_value_dispatch):
	Overload for 'res' as image.
	(set_value): Add static checks.
	Use set_value_tests.
	* mln/accu/image/take_as_init.hh (take_as_init_tests): New.
	(take_as_init): Update.
	(take_as_init_dispatch): Fix missing test over domains.
	* mln/accu/count.hh (trait): New overload.
	* tests/accu/image/set_value.cc: Augment.
	* tests/accu/image/take_as_init.cc: Augment.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@3746 4aad255d-cdde-0310-9447-f3009e2ae8c0