A gcc fix in LinearizerBase.
Implement ParalutionLinearMatrixSolver<Scalar>::get_residual().
Make PARALUTION compliant with other solvers in terms of initial_guess usage.
a fix in LinearizerBase.
L2 space added in Solution<Scalar>::transform_values
bug fixed
Merge pull request #97 from MelanieBittl/test

L2 space added in Solution<Scalar>::transform_values
Add Newton: p_iteration_with_recalculated_jacobian.
Work on MUMPS.
Finish CMAKE update for BLAS, MUMPS.
Work on documentation on Windows.
Allow saving system matrix/rhs vector for non-iterative solvers.
Allow setting a preconditioner derived from Hermes::Preconditioners::Precond when the AztecOO backend is used.
Typo correction.
Virtualizing PicardSolver::init_solving.
Making the iteration counter available also during the initialization phase (it==0) of PicardSolver.
Matrix solvers: Making some methods that certainly do not change their mother-object const.
Matrix solvers update:
 - moving add_vector repeated in derived classes to the base class Vector
 - adding set_vector
Matrix solvers: Enabling matrix addition in umfpack_solver
Matrix solvers: enabling set_precond(Precond*) in AztecOO solver.