Some code style corrections;

Removed IPP port for tiny arithm.cpp functions

Additional warnings fix on various platforms.

Build without OPENCL and GCC warnings fixed

Fixed warnings, trailing spaces and removed unused secure_cpy.

IPP code refactored.

IPP code path  implemented as separate static functions to simplify future work with IPP code and make it more readable.

int pix_per_thr = l_counter / LOCAL_TOTAL + ((lid < mod) ? 1 : 0);
The pix_per_thr * LOCAL_TOTAL may be larger than l_counter.
Thus the index of l_stack may be negative which may cause serious
problems. Let's skip the loop when we get negative index and we need
to add back the lcounter to keep its balance and avoid potential
negative counter.
Signed-off-by: Zhigang Gong <zhigang.gong@intel.com>

Conflicts:
	modules/highgui/src/grfmt_tiff.cpp

floodfill return value removed

Install symlinks to shared libraries as a part of development package,
not runtime package.

It is default behavior for debian packages.

Conflicts:
	modules/highgui/src/cap_ffmpeg_impl.hpp

Some TIFF images consist of only one strip. The magic value 2**32-1 for the
"rows per strip" tag reflects that fact, effectively meaning "infinite".

Conflicts:
	modules/highgui/src/grfmt_tiff.cpp
	modules/highgui/test/test_grfmt.cpp

fix whitespace

fix compile error

Conflicts:
	modules/features2d/src/draw.cpp

Conflicts:
	modules/highgui/src/cap_ffmpeg_impl.hpp

Conflicts:
	modules/gpu/doc/per_element_operations.rst

tiff test fixed

(cherry picked from commit e650d87e)
(cherry picked from commit ca9c52ac)

Conflicts:
	cmake/OpenCVPackaging.cmake

Fixed a memory leak in cap_dshow.cpp in videoInput::setVideoSettingCamera(). The leak was caused by not releasing an IBaseFilter object created in a call to getDevice(). Tho object is now properly released.

Conflicts:
	modules/highgui/src/cap_dshow.cpp

At least this is how it's defined in core/types_c.h

Conflicts:
	modules/core/doc/intro.rst

The function makes wave correction of a stitched panorama.
Earlier it gave wrong results for panorama made from 1 frame.

Conflicts:
	modules/calib3d/src/stereobm.cpp

Add CV_Assert (ndisp % 8 == 0) to NEON version

Fix resource leak with iOS camera due to failure to remove AVCaptureSession input/outputs on stop (Bug #3389)

Conflicts:
	modules/highgui/src/cap_ios_abstract_camera.mm

Android camera qcom HAL doesn't like it when no consumer usage bits are set. Set a usage bit for preview BufferQueue.

fix MatOpInitializer