* binarization/binarize.hh,
	* binarization/simple.hh,
	* binarization/sauvola_threshold.hh,
	* src/binarization/simple.cc,
	* src/binarization/sauvola_pgm.cc,
	* src/binarization/sauvola_ms.cc,
	* src/binarization/sauvola.cc: Rename as...


	* binarization/local_threshold.hh,
	* binarization/global_threshold_auto.hh,
	* binarization/sauvola_threshold_image.hh,
	* src/binarization/pgm_global_threshold_auto.cc,
	* src/binarization/pgm_sauvola.cc,
	* src/binarization/pgm_sauvola_ms.cc,
	* src/binarization/ppm_sauvola.cc: ... this.

	* binarization/global_threshold.hh,
	* binarization/sauvola_ms_split.hh,
	* src/binarization/ppm_fg_sauvola_ms.cc,
	* src/binarization/ppm_sauvola_ms.cc,
	* src/binarization/ppm_sauvola_ms_split.cc: New.

	* binarization/internal/first_pass_functor.hh: Fix an include.

	* binarization/sauvola.hh: Update code according to last renaming.

	* binarization/sauvola_ms.hh: Invert threshold test and add
	documentation.

	* src/binarization/Makefile.am: Add new targets.

	* tests/Makefile.am,
	* tests/binarization/Makefile.am,
	* tests/binarization/global_threshold.cc,
	* tests/binarization/local_threshold.cc: New tests.