[la.solver] major update * there is now a class Solver< MatrixType > that is   specialized for each matrix type * the solver is selected by passing an option to the   apply method
[la.solver] major update
* there is now a class Solver< MatrixType > that is
  specialized for each matrix type
* the solver is selected by passing an option to the
  apply method

renemilk/DUNE-Stuff,renemilk/DUNE-Stuff,renemilk/DUNE-Stuff