Merged in mikesheffler/gtsam (pull request #338)

Add <boost/serialization/vector.hpp> to fix a whole raft of compilation problems in gtsam_unstable_wrapper.cpp

* Add <boost/serialization/vector.hpp> to fix a whole raft of compilation problems in gtsam_unstable_wrapper.cpp

* Move the addition of the boost vector serialization include

* Moved include again. Frank pointed out that it really belongs in FactorGraph, not VectorValues. My bad.

gtsam/inference/FactorGraph.h

@@ -29,6 +29,7 @@
 #include <Eigen/Core>  // for Eigen::aligned_allocator
 
 #include <boost/serialization/nvp.hpp>
+#include <boost/serialization/vector.hpp>
 #include <boost/assign/list_inserter.hpp>
 #include <boost/bind.hpp>
 #include <boost/make_shared.hpp>

gtsam/linear/VectorValues.h

@@ -26,6 +26,7 @@
 
 #include <boost/shared_ptr.hpp>
 
+
 #include <map>
 #include <string>