Patch by Kenneth Riddile: disable MSVC warnings, reenable them outside

of Eigen, and add a MSVC-friendly path in StaticAssert.

Eigen/Regression

@@ -1,6 +1,10 @@
 #ifndef EIGEN_REGRESSION_MODULE_H
 #define EIGEN_REGRESSION_MODULE_H
 
+#include "Core"
+
+#include "src/Core/util/DisableMSVCWarnings.h"
+
 #include "LU"
 #include "QR"
 #include "Geometry"
@@ -19,4 +23,6 @@ namespace Eigen {
 
 } // namespace Eigen
 
+#include "src/Core/util/EnableMSVCWarnings.h"
+
 #endif // EIGEN_REGRESSION_MODULE_H