- allow installing samples sources on all platforms
  even if BUILD_EXAMPLES is disabled,  fixed minor
  issues in sources installation process
- use 'example_<group>_<name>' scheme for target and binary file naming
- use single function for sample executable creation

- use per-module includes instead of "opencv.hpp"
- unused function warnings
- undefined macro warning

Resolves CMake error after relaunch with updated source code:
Cannot find source file:
    modules/dnn/layers/layers_common.avx512_skx.cpp

* fix faster_rcnn sample crashed at PoolingInvoker operator() of pooling_layer.

* find_odj onmouse bug about find matched point status.

* reverted AutoBuffer back to std::vector

Found via `codespell`

* Added the imagesFromBlob method to the dnn module.

* Rewritten imagesFromBlob based on first dkurt comments

* Updated code with getPlane()

* Modify comment of imagesFromBlob() in dnn module

* modified comments, removed useless assertions & added OutputArrayOfArray

* replaced tabs with whitespaces & put vectorOfChannels instantiation outside the loop

* Changed pre-commit.sample to pre-commit in .git/hooks/

* Added a test for imagesFromBlob in test_misc.cpp (dnn)

* Changed nbOfImages, robustified test with cv::randu, modified assertion

* cmake: add ocv_get_smart_file_name() macro

* cmake: avoid adding files for unavailable dispatch modes

* Update BufferReader documentation with some example code

* Add warning to BufferPool doc regarding deallocation of StackAllocator

* Added a sample code that satisfies LIFO rule for StackAllocator

* Add new Mat constructor

* Fix build error

* Fix build error

* Fixed the code about 4 comments

* Fixed three comments

* delete previous local declaration

* fix build error

Read flags from 'cache' instead of resetting them

OpenCLAllocator::copy() may call upload()/download() methods

* Add a new interface for hough transform

* Fixed warning code

* Fix HoughLinesUsingSetOfPoints based on HoughLinesStandard

* Delete memset

* Rename HoughLinesUsingSetOfPoints and add common function

* Fix test error

* Change static function name

* Change using CV_Assert instead of if-block and add integer test case

* I solve the conflict and delete 'std :: tr1' and changed it to use 'tuple'

* I deleted std::tr1::get and changed int to use 'get'

* Fixed sample code

* revert test_main.cpp

* Delete sample code in comment and add snippets

* Change file name

* Delete static function

* Fixed build error

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