ts: refactor OpenCV tests

- 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

samples/gpu/opticalflow_nvidia_api.cpp

@@ -24,7 +24,7 @@ int main( int, const char** )
 }
 #else
 
-//using std::tr1::shared_ptr;
+//using std::shared_ptr;
 using cv::Ptr;
 
 #define PARAM_LEFT  "--left"