Gave CvSVM a private copy constructor & assignment operator.

The implicitly generated ones don't work properly, and I don't want to
write proper ones. :-)

"Fixes" <http://code.opencv.org/issues/3358>.

modules/ml/include/opencv2/ml/ml.hpp

@@ -548,6 +548,10 @@ protected:
 
     CvSVMSolver* solver;
     CvSVMKernel* kernel;
+
+private:
+    CvSVM(const CvSVM&);
+    CvSVM& operator = (const CvSVM&);
 };
 
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