It's needed for std::max.

- updated existing Doxyfile.in
- added corresponding cmake instructions
- added some specific files (layout, icon)
- clean existing doxygen warnings

Conflicts:
	CMakeLists.txt
	doc/CMakeLists.txt
	modules/core/include/opencv2/core.hpp
	modules/core/include/opencv2/core/base.hpp
	modules/core/include/opencv2/core/cuda.inl.hpp
	modules/core/include/opencv2/core/mat.hpp
	modules/core/include/opencv2/core/matx.hpp
	modules/core/include/opencv2/core/types.hpp
	modules/flann/include/opencv2/flann/lsh_table.h
	modules/imgproc/include/opencv2/imgproc.hpp

In CUDA 6.0 there was a bug in NPP LUT implementation (invalid results when
src == 255). In CUDA 6.5 the bug was fixed.

Replaced NPP LUT call with own implementation (ported from master branch) 
to be independant from CUDA Toolkit version.

see https://github.com/Itseez/opencv/pull/3137

add missing stream parameter to call_resize_linear_glob

it uses float arithmetics

Fixed an issue with weight assignment causing the resulting GMM weights to be unsorted in the CUDA and OCL versions of BackgroundSubtractorMOG2

add missing __syncthreads to edgesHysteresisLocalKernel

replace std::swap with own code

* BruteForceNonLocalMeans
* OpticalFlowBM

* out of border access in edgesHysteresisLocalKernel
* incorrect usage of atomicAdd

This reverts commit dbce9069.

This reverts commit 33d42b74.

This reverts commit 952027a8.

This reverts commit e91bf95d.

possible bug in CPU version