IPP: Hough

check_regression=*Hough*
build_examples=OFF
test_modules=imgproc
Merge with extra: Itseez/opencv_extra#176
- Integrated ippiHoughLine_Region.
- Refactored tests for supporting calculation of intersection between actual and expected lists of lines. Test is passed if intersection contains 80% of expected lines.
- Integrated ippiHoughProbLine, but disabled for now, since there is big difference with OpenCV version.