Build with ICC

This simple detector runs up to two times faster than LSD while achieving
competitive results. Please evaluate the algorithm with samples/fld_lines.cpp

whitespace cleanup

test - possible fix

test update

Using opencv/core/utility.hpp parallel primitives,
Intel TBB as backend is desirable.

Add CV_Assert for color image.

note that reference was merely regenerated, not verified.

caffe/vision_layers.hpp is gone. also fix some warnings.

added thinning sample
added thinning tests