lot's of changes; nonfree & photo modules added; SIFT & SURF -> nonfree module; Inpainting -> photo; refactored features2d (ORB is still failing tests), optimized brute-force matcher and made it non-template.

added improved ORB implementation, convex-convex polygon intersection, eigen2x2 low-level function ...

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)

added tests for some detectors; made features2d object create functions as static classes methods; fixed OpponentColorDescriptorExtractor, BriefDescriptorExtractor (on rgb); renamed DynamicDetector

adding the Brief descriptor, associated hamming distance functors for bruteforce matching.  Also adding cout << cv::Mat functions in core.

modified features2d interface; added algorithmic test for DescriptorMatcher; added sample on matching to many images