TLD fixes & optimizations

Added KCF Tracker Framework

added PASCAL VOC dataset

Added confidence support to disparity filtering

DisparityWLSFilter demonstrated the best results, so I removed all the other
filters. Quality was significantly improved by adding confidence support
to the filter (left-right consistency + penalty for areas near depth discontinuities).
Filter was optimized using parallel_for_ and HAL intrinsics. Demo application was
rewritten for better compliance with OpenCV standards. Added accuracy and
performance tests. Documentation was added, as well as references to the
original papers.

SurfaceMatching: OpenMP indices

Fixes compiler error: "index variable in OpenMP 'for' statement must have signed integral type"

change round to cvRound

fix for issue #195

avoid overflow in histogram access

Stereo branch

remove floor call

removed the filterSpeckles, getValidDisparityROI, validateDisparities functions and added the calib3d module in the dependency

vs2010 does not know, ceil, floor, round and friends.

also, those are plain integer divisions, that do not need floor at all.

vs2010 breaks

Basic HAL-accelerated autowbGrayworld

added INRIA pedestrian dataset