Accuracy and performance tests are also provided.

Backport from master.

command line option '-Wsign-promo' is valid for C++/ObjC++ but not for C [enabled by default]

- added CMake toolchain file
- added WITH_NVCUVID flag

added texture_binder

minor build system changes (now cuda code in opencv_core is compiled using CUDA_ARCH* cmake variables)

 [~] Automatically tracked dependencies between modules
 [+] Support for optional module dependencies
 [+] Options to choose modules to build
 [~] Removed hardcoded modules lists from OpenCVConfig.cmake, opencv.pc and OpenCV.mk
 [+] Added COMPONENTS support for FIND_PACKAGE(OpenCV)
 [~] haartraining and traincascade are moved outside of modules folder since they aren't the modules