compile with clang.

	* mln/accu/accumulators/count.hpp,
	* mln/accu/accumulators/infsup.hpp,
	* mln/accu/accumulators/max.hpp,
	* mln/accu/accumulators/mean.hpp,
	* mln/accu/accumulators/min.hpp,
	* mln/accu/accumulators/minmax.hpp,
	* mln/accu/accumulators/sum.hpp: Fix fwd declaration for clang.

	*  apps/supervised-gui/CMakeLists.txt,
	*  apps/supervised-gui/brush.cpp,
	*  apps/supervised-gui/brush.hpp,
	*  apps/supervised-gui/compute_distance.hpp,
	*  apps/supervised-gui/constants.hpp,
	*  apps/supervised-gui/supervised-cli.cpp,
	*  apps/supervised-gui/supervised-gui-3c.cpp: 3-classes based app.

	*  apps/CMakeLists.txt,
	*  apps/attributes/gradient_magnitude.hpp: Add gradient on 0F too.
	*  apps/mumford_shah_on_tree/CMakeLists.txt,
	*  apps/mumford_shah_on_tree/mumford_shah_on_tree.cpp,
	*  apps/mumford_shah_on_tree/mumford_shah_on_tree.hpp,
	*  apps/mumford_shah_on_tree/mumford_shah_on_tree_full.cpp: New.

	*  apps/g2/CMakeLists.txt,
	*  apps/g2/compute_g2.cpp,
	*  apps/g2/compute_g2.hpp,
	*  apps/g2/g2-maxdepth.cpp,
	*  apps/g2/routines.cpp,
	*  apps/g2/routines.hpp,
	*  apps/g2/types.hpp: Clean up.

	*  apps/tos/addborder.hpp: add a border processed marginally.
	*  apps/tos/croutines.hpp: add a grain_filter_inplace routine.

	*  cli/CMakeLists.txt,
	*  cli/area_close.cpp,
	*  cli/grain_filter.cpp: Fixed.
	*  cli/decompose_channels.cpp,
	*  cli/lab2rgb.cpp,
	*  cli/rgb2lab.cpp: New.

of an image to use the whole value dynamic.

	*  mln/data/stretch.hpp: New.

	*  mln/core/vec/vec_math_ops.hpp: Pow operation.

	*  mln/colors/lab.hpp,
	*  mln/colors/xyz.hpp: Fix coefficients and add back conversion.

	*  mln/accu/accumulators/accu_as_it.hpp: New. An accumulator
		wrapper whose return value is the accumlator itself.
	*  mln/accu/accumulators/variance.hpp: Add untake support.

	*  mln/io/freeimage_plugin.hpp: rgb/rgba float support.

needs complete lattices, not a total order.

	*  mln/accu/accumulators/infsup.hpp,
	*  mln/core/value/index.hpp,
	*  mln/core/value/value_traits.hpp: Some fixes to enable the use of
		the product partial order as default.

boost::result_of< F(p) > try to use that result_type instead of
using decltype.

	*  mln/core/image/morphers/transformed_image.hpp: Rename typedef result_type.

	*  mln/core/trace.hpp: Thread safety guards + static qualifiers.

	*  mln/core/value/value_traits.hpp,
	*  mln/core/vec.hpp,
	*  mln/core/vec/compare.hpp: LessEq functor.
	*  mln/core/vec/vec_ops.hpp,
	*  mln/core/vec_base.hpp; Dyn getter implementation.

	*  mln/colors/rgba.hpp,
	*  mln/core/colors.hpp,
	*  mln/core/image/morphers/transformed_image.hpp,
	*  mln/core/ops.hpp: Fixed.

	*  mln/io/freeimage_plugin.hpp: rgba writing support.
	*  mln/io/imread.hpp: Fix typo.
	*  mln/io/loader.hpp: Automatic type conversion support.
	*  mln/io/plugin.hpp: Fix doc.

	*  apps/attributes/Makefile,
	*  apps/attributes/gradient_magnitude-cli.cpp,
	*  apps/attributes/gradient_magnitude-patternspec.cpp,
	*  apps/attributes/gradient_magnitude.hpp: New.
	*  apps/attributes/meaningfullness-patternspec-cli.cpp: Improcve doc.

	*  apps/CMakeLists.txt,
	*  apps/hierachical_seg-gui/brush.cpp,
	*  apps/hierachical_seg-gui/brush.hpp,
	*  apps/hierachical_seg-gui/hierachical_seg-cli.cpp,
	*  apps/hierachical_seg-gui/hierachical_seg-gui.cpp,
	*  apps/hierachical_seg-gui/supervised-cli.cpp: New

	*  apps/qcm/Makefile,
	*  apps/qcm/qcm.cpp: New.

 	*  mln/morpho/opening.hpp: New.

    *  mln/colors/literal.hpp: New.

        *  apps/supervised-gui/CMakeLists.txt,
        *  apps/supervised-gui/brush.cpp,
        *  apps/supervised-gui/brush.hpp,
        *  apps/supervised-gui/myheap.hpp,
        *  apps/supervised-gui/supervised-cli.cpp: New app.

        *  apps/CMakeLists.txt,
        *  apps/attributes/CMakeLists.txt,
        *  apps/attributes/cMSER.hpp,
        *  apps/attributes/cMeaningFullNess.hpp,
        *  apps/attributes/curvature.cpp,
        *  apps/attributes/curvature.hpp,
        *  apps/attributes/MSER-patternspec-cli.cpp,
        *  apps/attributes/meaningfullness-cli.cpp,
        *  apps/attributes/meaningfullness-patternspec-cli.cpp: New.

Old implementation maintained for bwd compatibility.
        *  apps/attributes/MSER.hpp,
        *  apps/attributes/meaningfullness.hpp,
        *  apps/attributes/meaningfullnessArgparser.cpp,
        *  apps/tests/attributes/meaningfullness.cpp,

        *  apps/g2/Makefile,
        *  apps/g2/types.hpp,
        *  apps/g2/compute_g2.cpp,
        *  apps/g2/compute_g2.hpp: Add clean g2 computation routines
        generalized to n-dimensional data.

        *  apps/g2/g2.cpp,
        *  apps/g2/g2.hpp: Experimental code to play with G2.

        *  apps/g2/accu/lca.hpp: Fix doc and set default node to
           npos() on empty initialization.

        *  apps/g2/reconstruct.hpp,
        *  apps/g2/remove_parent_relation.hpp,
        *  apps/g2/routines.cpp,
        *  apps/g2/routines.hpp: Some G2 related routines.

        *  apps/g2/g2-maxdepth.cpp,
        *  apps/g2/satmaxtree-cli.cpp,
        *  apps/g2/satmaxtree.cpp,
        *  apps/g2/satmaxtree.hpp: New Graph Color Framework.

	*  apps/tos/Kinterpolate.hpp: Implement method to auto-detect
	resize parameters
	*  apps/tos/croutines.hpp: New routines using new ToS interface.
	*  apps/tos/topology.hpp: Add functor for 2F-test.

These files use the old interface, they are here for old-program using the
old interface but should be ported.
	*  apps/tos/Makefile,
	*  apps/tos/colorToSGrad.cpp,
	*  apps/tos/colorToSGrad.hpp: ICPR 2014 method.
	*  apps/tos/libtos.cpp,
	*  apps/tos/libtos.hpp: Pre-compiled methods.
	*  apps/tos/pgm_objdetection.cpp,
	*  apps/tos/pgm_objdetection_mser.cpp,
	*  apps/tos/ppm_objdetection.cpp,
	*  apps/tos/ppm_objdetection_mser.cpp: Object detection algorithms.
	*  apps/tos/routines.cpp,
	*  apps/tos/routines.hpp: Some ToS helper functions.

	*  apps/imview/CMakeLists.txt: Update with new compilation policy.
	*  mln/qt/imageviewer.cpp: Remove.
	*  mln/qt/imageviewer.hpp,
	*  mln/qt/imageviewer.hxx: Clean

	*  mln/core/image/image.hpp,
	*  mln/core/image/image_math_ops.hpp: New image operators.
	*  mln/core/math_ops.hpp: Fix missing const.
	*  mln/core/image/morphers/morpher_base.hpp: Clean.

	*  mln/io/freeimage_plugin.hpp: Add palette support.

from the underlying pylene's Image.

	*  mln/qt/imageviewer.cpp,
	*  mln/qt/qtimage.cpp,
	*  mln/qt/qtimage.hpp: Implement update() function.

type in order to use a proper overload resolution.

	* mln/core/algorithm/transform.hpp: Pass exact type to imchvalue.

relies on individual image value type instead of reference type.

	* mln/core/image/morphers/zip_image.hpp: Fix.

 	* apps/CMakeLists.txt,
	* apps/supervised-gui/CMakeLists.txt,
	* apps/supervised-gui/brush.cpp,
	* apps/supervised-gui/brush.hpp,
	* apps/supervised-gui/supervised-cli.cpp: New.

is a standard QT widget.

	* mln/qt/graphics_pixmap_item.cpp,
	* mln/qt/graphics_pixmap_item.hpp: Deleted.
	* mln/qt/mainwin.cpp, mln/qt/mainwin.hpp: Renamed as...
	* mln/qt/imageviewer.cpp, mln/qt/imageviewer.hpp: ...this.
	* apps/imview/CMakeLists.txt,
	* apps/imview/imview.cpp,
	* apps/saliency/CMakeLists.txt,
	* apps/saliency/dispsaliency.hpp,
	* apps/tosgui/CMakeLists.txt,
	* apps/tosgui/dispatcher.cpp,
	* apps/tosgui/dispatcher.hpp,
	* apps/tosgui/toscgui.cpp,
	* apps/tosgui/tosgui.cpp: Updated with new API.

	*  mln/core/property_map.hpp: The functional property_map defines
	   the argument type.
	*  mln/morpho/component_tree/accumulate.hpp: Some fixes on return types.
	*  mln/morpho/component_tree/component_tree.hpp: Add image_property_map
           include.
	*  mln/morpho/component_tree/filtering.hpp: Fix bug in the inplace
           filtering. Links where not set right.
	*  mln/morpho/component_tree/reconstruction.hpp: Generalize the
           attribute map parameter.
	*  mln/morpho/datastruct/component_tree.hpp: Add method to fulfill
           domain concept requirements.
	*  mln/morpho/datastruct/image_property_map.hpp: Some fixes.
	*  mln/morpho/tos/ctos.hpp: Formatting.

	*  mln/core/algorithm/sort_sites.hpp: Fix.

	*  mln/kernel/aggregate/inf.hpp: Add inf kernel aggregate.
	*  mln/kernel/function.hpp: Add function meta term.
	*  mln/morpho/erode.hpp: New.
	*  mln/morpho/gradient.hpp: New.
	*  tests/morpho/CMakeLists.txt: Update.
	*  tests/morpho/gradient.cpp: New.

	*  mln/colors/rgba.hpp: New.
	*  mln/core/image/morphers/transformed_image.hpp: Fix internal helpers
           to declare new operators.
	*  mln/core/colors.hpp: Fixes.
	*  mln/io/freeimage_plugin.hpp: Add RGBA support.

Add functor for basic ops in functional namespace.
Fix issue in value_traits<V> when V is a vector but no ordering is required.

	*  mln/core/image/image_ops.hpp,
	*  mln/core/math_ops.hpp,
	*  mln/core/vec/vec_math_ops.hpp,
	*  mln/core/ops.hpp: Add l2_norm and functors.
	*  mln/core/value/int.hpp,
	*  mln/core/vec_base.hpp,
	*  mln/core/value/value_traits.hpp: Augment traits with ndim...
	*  mln/core/vec/compare.hpp: ... and fix order requirement.

	*  mln/accu/accumulators/variance.hpp: New.