this enables the usage of current sensors, while dropping support for
legacy devices, see:
https://github.com/IntelRealSense/librealsense#overview

Given limited resources, and that the legacy sensors where not that
great, I think we should focus on v2.

Revert "documentation: avoid links to 'master' branch from 3.4 maintenance branch"
This reverts commit 9ba9358e.

Revert "documentation: avoid links to 'master' branch from 3.4 maintenance branch (2)"
This reverts commit f1858024.

Tested with:
- pylint 1.9.1

* StereoBM: fixed SIMD processing for fixed-type output arrays

* changed norm type and threshold, added assertion

* fixed disp_shift

MSVC ARM / WinRT builds

If this seems too wordy, take into account a new user who tries to find out extent of FP16 support in OpenCV.

* add universal intrinsics for HSV2RGB_b

* rewritten HSV2RGB_b without using extra universal intrinsics

* removed unused variable

* undo changes in v_load_deinterleave

fixes handling of empty matrices in some functions (#11634)

* a part of PR #11416 by Yuki Takehara

* moved the empty mat check in Mat::copyTo()

* fixed some test failures