Also move cv::linemod to own header

Fixed isdigit() Android build error

- Changed to floating neighbor maximum mode
- Fixed some previous errors.

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.