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/videostab/test/test_motion_estimation.cpp

@@ -4,6 +4,8 @@
 
 #include "test_precomp.hpp"
 
+namespace opencv_test { namespace {
+
 namespace testUtil
 {
 
@@ -169,3 +171,5 @@ TEST(Regression, MM_AFFINE)
 {
     EXPECT_LT(testUtil::performTest(cv::videostab::MM_AFFINE, 6), 9.f);
 }
+
+}} // namespace