Move deprecated warnings to member variables

Otherwise they get triggert even if the deprecated classes are not used. Maybe not the best solution, but it will be removed soon anyway.

dune/elasticity/assemblers/feassembler.hh

@@ -179,7 +179,7 @@ namespace Dune
 /** \brief A global FE assembler for variational problems (old fufem bases version)
  */
 template <class Basis, class VectorType >
-class DUNE_DEPRECATED_MSG("dune-elasticity with dune-fufem bases is now deprecated. Use Elasticity::FEAssembler with dune-functions bases.")
+class
 FEAssembler
 {
 
@@ -195,7 +195,8 @@ FEAssembler
     typedef Dune::FieldMatrix<double, blocksize, blocksize> MatrixBlock;
 
 public:
-    const Basis basis_;
+    const Basis
+      DUNE_DEPRECATED_MSG("dune-elasticity with dune-fufem bases is now deprecated. Use Elasticity::FEAssembler with dune-functions bases.") basis_;
 
     /** \brief Partition type on which to assemble
      *