Algorithm::info()-related code disabled-after moving to opencv_contrib caused compilation errors

Added usage examples

Added documentation for optflow_io

+bugfix: handling invalid algorithm choice

+ solving MSVC compilation errors; assuming that int and float are 4-bytes long - possibly needs fixing

adds class OCRHMMDecoder API interface and implementation and updates webcam_demo sample to use it

refactors OCRTesseract interface

ADAS: multiple fixes, fcw_train and fcw_detect applications

update to new OpenCV 3.0 ml API and adds parallell_for_ OCR

ximgproc license

fixed ximgproc build on ARM

added xfeatures2d (made of opencv/nonfree and a part of opencv/features2d)

TLD

Edgefilter