fixed test failure in matrix-dotproduct test (by increasing the desired accuracy threshold) (ticket #447)
fixed test failure in matrix-dotproduct test (by increasing the desired accuracy threshold) (ticket #447)

opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,apavlenko/opencv,opencv/opencv,opencv/opencv,apavlenko/opencv,opencv/opencv,apavlenko/opencv,apavlenko/opencv,apavlenko/opencv,opencv/opencv,opencv/opencv,opencv/opencv,apavlenko/opencv