the min/max macros to detect unprotected min/max were undefined by some std header,

so let's declare them after and do the respective fixes ;)

test/sparse_solvers.cpp

@@ -47,7 +47,7 @@ initSPD(double density,
 
 template<typename Scalar> void sparse_solvers(int rows, int cols)
 {
-  double density = std::max(8./(rows*cols), 0.01);
+  double density = (std::max)(8./(rows*cols), 0.01);
   typedef Matrix<Scalar,Dynamic,Dynamic> DenseMatrix;
   typedef Matrix<Scalar,Dynamic,1> DenseVector;
   // Scalar eps = 1e-6;