Fix cvb_track

[Ahmed-Youssry]

hi, the two files cvb_track.cpp and cvb_track.h is not added to the vc project and when i add them they gives errors in the building but when i build without them they build successfully how do i get them to work.

[Steelskin]

Hi, The tracking functionality was never ported from the original project at https://code.google.com/p/cvblob/ I will welcome pull requests on that feature.