* added performance test for compareHist

* compareHist reworked to use wide universal intrinsics

* Disabled vectorization for CV_COMP_CORREL and CV_COMP_BHATTACHARYYA if f64 is unsupported

Add ability to build iOS and macOS frameworks with nonfree modules (#13424)

* Allow building ios framework with nonfree

* Allow building osx framework with nonfree

On windows 7, MinCore_Downlevel does not work correctly. However, the only API used was QISearch, which can be found in Shlwapi.

Closes #12010

* try to solve #13381

* Add note

* Added dependency verification mechanism for cmake

moved to CMakeFiles (no conflicts are expected)

DNN backends registry (#13332)

* Added dnn backends registry

* dnn: process DLIE/FPGA target