replaces REUSE_DNN_MEMORY compile-time option

Bitwise "and false" is always false.

* Add a parameter labels to command line

* default value

* samples: caffe_googlenet.cpp minor refactoring

prepareData() bug feeds the same image (the latest)
OCL perf test doesn't pass accuracy(!) check now, so this check is disabled.

warning: 'layout.channel_layout::gchan' may be used uninitialized in this function [-Wmaybe-uninitialized]

warning: comparison between signed and unsigned integer expressions [-Wsign-compare]

* Load and save tiff images in CV_32FC1 format (1 channel of floats).

* Add test

* Fix error handling and resources leak. Improve test.

Signed-off-by: Li Peng <peng.li@intel.com>

Signed-off-by: Li Peng <peng.li@intel.com>

* add style draw in yolo

* fix sintaxe whitespace

* fix conversion from float to int

* sample refactoring

- minor code style fixes
- avoid confusing "bottom" names
- use cv::format
- always draw object detection/roi

Updating stiching.cpp to resolve new line issue #10461 (#10469)