added new-style methods (accepting cv::Mat instead of CvMat) and the class name alias...

added new-style methods (accepting cv::Mat instead of CvMat) and the class name aliases (e.g. cv::SVM ~ CvSVM); save() & write() methods made "const"

git-svn-id: https://code.ros.org/svn/opencv/trunk@2194 73c94f0f-984f-4a5f-82bc-2d8db8d8ee08