Adjust include guard to Dune standards and rename DiscFuncType to VectorType

dune/solvers/transferoperators/mandelobsrestrictor.hh

-#ifndef MANDEL_OBSTACLE_RESTRICTOR_HH
-#define MANDEL_OBSTACLE_RESTRICTOR_HH
+#ifndef DUNE_SOLVERS_TRANSFEROPERATORS_MANDEL_OBSTACLE_RESTRICTOR_HH
+#define DUNE_SOLVERS_TRANSFEROPERATORS_MANDEL_OBSTACLE_RESTRICTOR_HH
 
 #include <dune/common/bitsetvector.hh>
 #include <dune/solvers/transferoperators/obstaclerestrictor.hh>
 #include <dune/solvers/transferoperators/multigridtransfer.hh>
 #include <dune/solvers/common/boxconstraint.hh>
 
-template <class DiscFuncType>
-class MandelObstacleRestrictor : public ObstacleRestrictor<DiscFuncType>
+template <class VectorType>
+class MandelObstacleRestrictor : public ObstacleRestrictor<VectorType>
 {
-    typedef typename DiscFuncType::field_type field_type;
+    typedef typename VectorType::field_type field_type;
     
-    enum {blocksize = DiscFuncType::block_type::dimension};
+    enum {blocksize = VectorType::block_type::dimension};
 
 public:
     
@@ -19,7 +19,7 @@ public:
                           std::vector<BoxConstraint<field_type,blocksize> >& t,
                           const Dune::BitSetVector<blocksize>& fHasObstacle,
                           const Dune::BitSetVector<blocksize>& tHasObstacle,
-                          const MultigridTransfer<DiscFuncType>& transfer,
+                          const MultigridTransfer<VectorType>& transfer,
                           const Dune::BitSetVector<blocksize>& critical);
 };