- removed tr1 usage (dropped in C++17)
- moved includes of vector/map/iostream/limits into ts.hpp
- require opencv_test + anonymous namespace (added compile check)
- fixed norm() usage (must be from cvtest::norm for checks) and other conflict functions
- added missing license headers

it uses HAVE_CUDA, HAVE_NVCUVID, etc. macroses

reworked nearly all of the OpenCV tests (except for opencv_gpu tests) - they now use the Google Test engine.