oops, now the default return in GeometryName is unknown.

[[Imported from SVN: r2073]]

grid/common/grid.hh

@@ -136,7 +136,7 @@ namespace Dune {
       return "simplex";
     case hypercube :
       return "hypercube";
-      default unknown :
+    default :
       return "unknown";
     }
   }