* scribo/binarization/sauvola_threshold_image.hh: Fix namespace
	ambiguity.

	* scribo/io/xml/save.hh
	* scribo/primitive/extract/elements.hh
	* scribo/primitive/merge/components.hh
	* scribo/toolchain/text_in_doc_preprocess.hh
	* scribo/toolchain/text_in_picture.hh
	* src/binarization/ppm_sauvola_ms.cc
	* src/binarization/ppm_sauvola_ms_fg.cc
	* src/binarization/ppm_sauvola_ms_split.cc
	* src/binarization/sauvola_ms.cc
	* src/binarization/sauvola_ms_fg.cc
	* src/binarization/sauvola_ms_split.cc
	* src/contest/hdibco-2010/sauvola_ms_hdibco.cc
	* src/text_in_picture.cc: Add missing includes.

	* scribo/primitive/extract/lines_h_pattern.hh,
	* scribo/primitive/extract/lines_v_pattern.hh: Make sure the
	rectangle have odd dimensions.

	* src/Makefile.am: Remove deprecated include path.

	* src/binarization/ppm_sauvola.cc: Convert to gray level.

	* src/pbm_text_in_doc.cc: Use doc structure.

	* src/text_in_picture_neg.cc: Make use of world::rgb::invert.