Use new linear solver interface in fully implicit solver.

This includes:
 - Using the class FullyImplicitBlackoilResidual instead of
   in-class definition for the residual object.
 - Changing residual field name mass_balance to material_balance_eq.
 - Letting the simulator and solver classes accept a
   FullyImplicitSystemSolverInterface instead of a LinearSolverInterface.
 - In sim_fibo_ad and test_implicit_ad, instantiate class
   FullyImplicitSystemSolverSimple, replicating existing behaviour.

examples/sim_fibo_ad.cpp

@@ -41,6 +41,7 @@
 #include <opm/core/props/rock/RockCompressibility.hpp>
 
 #include <opm/core/linalg/LinearSolverFactory.hpp>
+#include <opm/autodiff/FullyImplicitSystemSolverSimple.hpp>
 
 #include <opm/core/simulator/BlackoilState.hpp>
 #include <opm/core/simulator/WellState.hpp>
@@ -137,6 +138,7 @@ try
 
     // Linear solver.
     LinearSolverFactory linsolver(param);
+    FullyImplicitSystemSolverSimple fis_solver(linsolver);
 
     // Write parameters used for later reference.
     bool output = param.getDefault("output", true);
@@ -211,7 +213,7 @@ try
                                                  *new_props,
                                                  rock_comp->isActive() ? rock_comp.get() : 0,
                                                  wells,
-                                                 linsolver,
+                                                 fis_solver,
                                                  grav,
                                                  outputWriter);
         if (epoch == 0) {