TLD Open CL Support

wrap DAISY and LATCH to scripting

Conflicts:
	modules/tracking/src/precomp.hpp
	modules/tracking/src/tldDetector.cpp
	modules/tracking/src/tldDetector.hpp
	modules/tracking/src/tldModel.cpp
	modules/tracking/src/tldModel.hpp

1. Added 2-nd level of parallelization of NN on OpenCL
2. Restructured detector - now all filters work independently:
Variance Filter->Ensemble->NN,  through "buffers"

fixed warnings in the tracking module

Fix for Itseez/opencv_contrib/issues/278 - core dump in the case of no match(...) results.

Adds a first implementation of the OCRBeamSearchDecoder class

TLD fixes & optimizations

Added KCF Tracker Framework

added PASCAL VOC dataset

1. Added 2-nd level of parallelization of NN on OpenCL
2. Restructured detector - now all filters work independently:
Variance Filter->Ensemble->NN,  through "buffers"