Old canny stuff superseded by ICanny

	modified:   ../cvt/CMakeLists.txt
	new file:   ../cvt/gfx/ICanny.h
	modified:   ../cvt/gfx/Image.cpp
	modified:   ../cvt/gfx/Image.h
	deleted:    ../cvt/gfx/ifilter/Canny.h
	modified:   ../cvt/vision/BoardDetector.cpp
	modified:   ../cvt/vision/BoardDetector.h
	modified:   ../plugins/ifilter/CMakeLists.txt
	deleted:    ../plugins/ifilter/Canny/CMakeLists.txt
	deleted:    ../plugins/ifilter/Canny/canny.cpp