Fixed alignment issue ...

	modified:   ../cvt/util/SIMDSSE2.cpp
Use vec as parameter name in Vector6

	modified:   cvt/math/Vector6.h
Various small fixed for SBA

	modified:   ../cvt/vision/SparseBundleAdjustment.cpp
	modified:   ../cvt/vision/SparseBundleAdjustment.h
Various small fixes for SBA

	modified:   ../cvt/vision/SparseBundleAdjustment.cpp
	modified:   ../cvt/vision/SparseBundleAdjustment.h
Merge branch 'master' of ssh://github.com/tum-uav/cvt
Removed old and unused feature headers
	deleted:    ../vision/FeatureFilter.h
	deleted:    ../vision/FeatureMatcher.h
	deleted:    ../vision/FeatureRowLookupContainer.h
Change usage of GFXEngine and Drawable interface

	modified:   ../gfx/GFX.cpp
	modified:   ../gfx/GFX.h
	modified:   ../gfx/Image.cpp
	modified:   ../gfx/Image.h
	modified:   Widget.cpp
	modified:   Widget.h
	modified:   Window.cpp
	modified:   Window.h
Small changes to FlatSLAMMap

	modified:   cvt/vision/slam/FlatSLAMMap.h
Small changes to KeyFrame

	modified:   cvt/vision/slam/Keyframe.h
Old canny stuff superseded by ICanny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
Started removing all old ifilter stuff

	modified:   ../cvt/CMakeLists.txt
	deleted:    ../cvt/gfx/ifilter/AdaptiveThreshold.cpp
	deleted:    ../cvt/gfx/ifilter/AdaptiveThreshold.h
	deleted:    ../cvt/gfx/ifilter/ColorCode.cpp
	deleted:    ../cvt/gfx/ifilter/ColorCode.h
	deleted:    ../cvt/gfx/ifilter/MorphDilate.cpp
	deleted:    ../cvt/gfx/ifilter/MorphDilate.h
	deleted:    ../cvt/gfx/ifilter/MorphErode.cpp
	deleted:    ../cvt/gfx/ifilter/MorphErode.h
	deleted:    ../cvt/gfx/ifilter/Sobel.cpp
	deleted:    ../cvt/gfx/ifilter/Sobel.h
	deleted:    ../cvt/gfx/ifilter/Threshold.cpp
	deleted:    ../cvt/gfx/ifilter/Threshold.h