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

modules/ts/src/ts.cpp

@@ -77,6 +77,10 @@
 
 #include "opencv_tests_config.hpp"
 
+namespace opencv_test {
+bool required_opencv_test_namespace = false;  // compilation check for non-refactored tests
+}
+
 namespace cvtest
 {