[C++] Correct typedef as gcc complains

src/multibody/model.hpp

@@ -45,10 +45,10 @@ namespace se3
   class Model
   {
   public:
-    typedef Index Index;
-    typedef JointIndex JointIndex;
-    typedef GeomIndex GeomIndex;
-    typedef FrameIndex FrameIndex;
+    typedef se3::Index Index;
+    typedef se3::JointIndex JointIndex;
+    typedef se3::GeomIndex GeomIndex;
+    typedef se3::FrameIndex FrameIndex;
 
     int nq;                               // Dimension of the configuration representation
     int nv;                               // Dimension of the velocity vector space

src/spatial/frame.hpp

@@ -34,7 +34,7 @@ namespace se3
   ///
   struct Frame
   {
-    typedef JointIndex JointIndex;
+    typedef se3::JointIndex JointIndex;
       
     Frame() : name(random(8)), parent_id(), framePlacement() {} // needed by EIGEN_DEFINE_STL_VECTOR_SPECIALIZATION