* mln/io/pgm: New directory.
	* mln/io/save_pgm.hh: Rename as...
	* mln/io/pgm/save.hh: ...this.
	(save_pgn): Rename as...
	(save): ...this.
	* mln/io/load_pgm.hh: Rename as...
	* mln/io/pgm/load.hh: ...this.
	(load_pgm): Rename as...
	(load): ...this.

	* tests/level_naive_median.cc,
	* tests/linear_log.cc,
	* tests/level_median_hline2d.cc,
	* tests/morpho_thinning.cc,
	* tests/morpho_erosion.cc,
	* tests/morpho_hit_or_miss.cc,
	* tests/morpho_laplacian.cc,
	* tests/morpho_opening_area.cc,
	* tests/labeling_regional_maxima.cc,
	* tests/level_median_fast.cc,
	* tests/level_approx_median.cc,
	* tests/level_median.cc,
	* tests/linear_convolve.cc,
	* tests/linear_sobel.cc,
	* tests/line_convolve.cc,
	* tests/linear_gaussian.cc,
	* tests/linear_lap.cc,
	* tests/labeling_foreground.cc,
	* tests/morpho_contrast.cc,
	* tests/morpho_gradient.cc: Update.

	* mln/linear/gaussian.hh,
	* mln/canvas/morpho/algebraic_union_find.hh,
	* mln/canvas/dirbrowsing.hh,
	* mln/canvas/labeling.hh: Fix warnings.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@1093 4aad255d-cdde-0310-9447-f3009e2ae8c0