forgot typedefs in hexa specialisation.

[[Imported from SVN: r4479]]

grid/alu3dgrid/alu3dinclude.hh

@@ -187,6 +187,8 @@ namespace Dune {
   struct ALU3dImplTraits<hexa>::Codim<0> {
     typedef ALU3DSPACE GitterType::helement_STI InterfaceType;
     typedef IMPLElementType ImplementationType;
+    typedef ALU3DSPACE HBndSegType GhostInterfaceType;
+    typedef PLLBndFaceType GhostImplementationType;
   };
 
   template <>