* headers.mk: add new headers to distribution.

	* mln/core/internal/site_relative_iterator_base.hh: avoid a warning.

	* mln/labeling/blobs.hh,
	* mln/draw/line.hh: use trace::warning.

	* mln/trace/warning.hh: always print warnings.

	* mln/fun/x2x/rotation.hh: fix a precondition.

	* mln/morpho/tree/data.hh: add a missing method.

	* tests/level/median.cc: add a missing include.

	* tests/unit_test/Makefile.am,
	* tests/unit_test/mln_accu_transform_line.cc,
	* tests/unit_test/mln_convert_impl_from_double_to_value.cc,
	* tests/unit_test/mln_opt_value.cc: add missing unit_tests.

	* tests/unit_test/mln_histo_data.cc: rename as...
	* tests/unit_test/mln_histo_array.cc: ... this.

git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@3162 4aad255d-cdde-0310-9447-f3009e2ae8c0