New subspaces for the combined space

[[Imported from SVN: r2715]]

fem/space/subspace.cc

+// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+// vi: set et ts=4 sw=2 sts=2:
+
+namespace Dune {} // end namespace Dune

fem/space/subspace.hh

+// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+// vi: set et ts=4 sw=2 sts=2:
+#ifndef DUNE_SUBSPACE_HH
+#define DUNE_SUBSPACE_HH
+
+namespace Dune {} // end namespace Dune
+
+#include "subspace.cc"
+
+#endif