Conflicts:
	modules/core/include/opencv2/core/cuda.hpp
	modules/cudacodec/src/thread.cpp
	modules/cudacodec/src/thread.hpp
	modules/superres/perf/perf_superres.cpp
	modules/superres/src/btv_l1_cuda.cpp
	modules/superres/src/optical_flow.cpp
	modules/videostab/src/global_motion.cpp
	modules/videostab/src/inpainting.cpp
	samples/cpp/stitching_detailed.cpp
	samples/cpp/videostab.cpp
	samples/gpu/stereo_multi.cpp

removed set/get methods from Algorithm (implement owns)
removed GHT_* enumeration

Made all STL usages explicit to be able automatically find all usages of
particular class or function.

fixed iterations>1 case in morphological operations
fixed possible access violation in HSV2RGB
fixed the case learningRate==0 in BackgroundSubtractorMOG2