fix #3477:

CV_CAP_PROP_SUPPORTED_PREVIEW_SIZES_STRING property is not supported
by all VideoCapture backends. Some backends can return 0.0 or -1.0.
Merge pull request #2097 from pclove1:blur_border_isolated
Merge pull request #2205 from jet47:bug-3477-fix
Merge pull request #2211 from SpecLad:merge-2.4
Added returnDFVal parameter to parallel CvSVM::predict function
Added ocl_Mog2
fixed
Merge pull request #2213 from ilya-lavrenov:tapi_buildPyramid
Multiple fixes for tests deb package build.

Added opencv_testing.sh.in file;
opencv_testing.sh installation guarded by OS check.
Merge pull request #2215 from asmorkalov:ocv_testpack_fix
fixes for defects from code coverity
optimized createHanningWindow
fixed warnings
implemented OpenCL version of cv::accumulate****
fixed
Added result_probabilities parameter to CvNormalBayesClassifier::predict method. Issue #3401
opencv_run_all_tests.sh script added to -tests package.
Merge pull request #2221 from asmorkalov:ocv_test_install_custom
Merge pull request #2214 from cosminBoaca:add_returnDFVal_parallel_predict
Merge pull request #2212 from SpecLad:hog-sample-const-mat