Merged in fix/warning-and-namespace (pull request #297)

Fix warning and namespace

gtsam/base/GenericValue.h

@@ -190,7 +190,7 @@ public:
     }
 
 /// use this macro instead of BOOST_CLASS_EXPORT for GenericValues
-#define GTSAM_VALUE_EXPORT(Type) BOOST_CLASS_EXPORT(GenericValue<Type>)
+#define GTSAM_VALUE_EXPORT(Type) BOOST_CLASS_EXPORT(gtsam::GenericValue<Type>)
 
 };
 

gtsam/navigation/PreintegratedRotation.h

@@ -35,6 +35,8 @@ struct PreintegratedRotationParams {
 
   PreintegratedRotationParams() : gyroscopeCovariance(I_3x3) {}
 
+  virtual ~PreintegratedRotationParams() {}
+
   virtual void print(const std::string& s) const;
   virtual bool equals(const PreintegratedRotationParams& other, double tol=1e-9) const;