Revert "change the private data member in LaplacianInferenceMethod"

This reverts commit 1fa1517.

src/shogun/machine/gp/LaplacianInferenceMethod.h

@@ -283,6 +283,8 @@ class CLaplacianInferenceMethod: public CInferenceMethod
 
 private:
 	void init();
+
+protected:
 	/** amount of tolerance for Newton's iterations */
 	float64_t m_tolerance;
 
@@ -295,7 +297,6 @@ class CLaplacianInferenceMethod: public CInferenceMethod
 	/** max iterations for Brent's minimization method */
 	float64_t m_opt_max;
 
-protected:
 	/** mean vector of the approximation to the posterior */
 	SGVector<float64_t> m_mu;