modify signature of stereoCalibrate for consistency
update doc accordingly
added guard against linking qt5 and VTK together
modified viz module header layout for 2.4 compatibility
HOG
perf test
some changes
fixes
optimized cv::pow for integer power
minor ocl.cpp refactoring

fix for cv::LUT and cv::transpose
very preliminary port of SURF to T-API (compiles but certainly does not work)
fixed
drawing
Merge pull request #2275 from ElenaGvozdeva:ocl_matchTemplate
Merge pull request #2268 from ilya-lavrenov:tapi_pow
Merge pull request #2252 from ilya-lavrenov:ocl_ref
Merge pull request #2234 from KonstantinMatskevich:ocl_tapi_hog
core/ocl: OpenCLBufferPool
features2d
fix memory leak for Mat::getUMat() operation