* Added performance tests for hal::norm functions

* Added sum of absolute differences intrinsic

* norm implementation updated to use wide universal intrinsics

* improve and fix v_reduce_sad on VSX

TS: fix Python v2/v3 compatibility (#12667)

* TS: fix Python2.7 compatibility

* TS: fix Python3 compatibility

* py3: use integer division '/' => '//' instead of cast

  especially if it matches the module being tested

- DNN: avoid very large models
- build filter per module
- fixed longTestFilter

Helper script from googletest: ./scripts/fuse_gtest_files.py

Found via `codespell -q 3 -I ../opencv-whitelist.txt --skip="./3rdparty"`

Example (reuse 'Transform' test case):
PERF_TEST(Transform, getPerspectiveTransform_1000) { ... }
PERF_TEST(Transform, getPerspectiveTransform_QR_1000) { ... }

* core:OE-27 prepare universal intrinsics to expand (#11022)

* core:OE-27 prepare universal intrinsics to expand (#11022)

* core: Add universal intrinsics for AVX2

* updated implementation of wide univ. intrinsics; converted several OpenCV HAL functions: sqrt, invsqrt, magnitude, phase, exp to the wide universal intrinsics.

* converted log to universal intrinsics; cleaned up the code a bit; added v_lut_deinterleave intrinsics.

* core: Add universal intrinsics for AVX2

* fixed multiple compile errors

* fixed many more compile errors and hopefully some test failures

* fixed some more compile errors

* temporarily disabled IPP to debug exp & log; hopefully fixed Doxygen complains

* fixed some more compile errors

* fixed v_store(short*, v_float16&) signatures

* trying to fix the test failures on Linux

* fixed some issues found by alalek

* restored IPP optimization after the patch with AVX wide intrinsics has been properly tested

* restored IPP optimization after the patch with AVX wide intrinsics has been properly tested

to allow pass `--test_bigdata` via run.py

Pass --test_bigdata to allow launching of "BigData" tests.

__ridx__ is an _undefined name_ in this context but __self.ridx__ is used three other times in this method and nine times in this class.  Undefined names may raise [NameError](https://docs.python.org/3/library/exceptions.html#NameError) at runtime.

flake8 testing of https://github.com/opencv/opencv

$ __flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics__
```
./modules/ts/misc/table_formatter.py:50:23: F821 undefined name 'ridx'
            self.rows[ridx + 1].props = properties
                      ^
```

  * restore resize of carotene
  * clean up the source code
  * remove unused member function (Near)
  * add strict test on the border

- disable "-Wsuggest-override" in tests

Found via `codespell`

Most part is deprecated since C++11

- 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