* binarization/sauvola_ms.hh: Add a missing include.

	* binarization/sauvola_threshold.hh: Remove debug and useless
	comments.

	* preprocessing/unskew.hh: Fix invalid guards.

	* primitive/extract/components.hh: Fill image extension.

	* primitive/extract/lines_pattern.hh: Adjust and fill image
	extension.

	* primitive/extract/lines_v_thick.hh: Fix traces.