removed contrib, legacy and softcsscade modules; removed latentsvm and datamatrix detector from objdetect. removed haartraining and sft apps.
some of the stuff will be moved to opencv_contrib module.
in order to make this PR pass buildbot, please, comment off opencv_legacy, opencv_contrib and opencv_softcascade test runs.

Also move cv::linemod to own header

modified facedetect to properly display very oblong objects and optionally flip image horizontally (for profile face detection). Added LBP cascades by Attila Novak for profile face detection and silverware detection (those are results of GSoC 2012)

removed trailing backspaces, reduced number of warnings (under MSVC2010 x64) for size_t to int conversion, added handling of samples launch without parameters (should not have abnormal termination if there was no paramaters supplied)

command line parser added. Leonid Beynenson is original contributor of the class. Class will be used in samples for convenient (and unified) work with command arguments.