ADD: new track message, Entity class and Position class

libs/eigen/failtest/eigensolver_int.cpp

@@ -0,0 +1,14 @@
+#include "../Eigen/Eigenvalues"
+
+#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
+#define SCALAR int
+#else
+#define SCALAR float
+#endif
+
+using namespace Eigen;
+
+int main()
+{
+  EigenSolver<Matrix<SCALAR,Dynamic,Dynamic> > eig(Matrix<SCALAR,Dynamic,Dynamic>::Random(10,10));
+}