added cv::GFTTDetector
doc fix
Added ocl_Mog2
fixed
fixes for defects from code coverity
fixed warnings
fixed
fix memory management problem
fix unintialized fields
fixed test
removed ABF
Merge pull request #2232 from ilya-lavrenov:ABF_drop
Merge pull request #2202 from ilya-lavrenov:tapi_GFTTDetector
Merge pull request #2216 from ElenaGvozdeva:ocl_MOG2
Merge pull request #2218 from alalek:fix_defects_code_coverity