specify the number of iterations where we use a "strict" Newton convergence criterion using a separate parameter

that parameter is called "max_strict_iter". This increases the
flexibility of this slightly and it avoids screwing up the default
value for the "max_iter" parameter in the future. The credits for this
patch go to [at]atgeirr for proposing it.

opm/autodiff/BlackoilModelParameters.hpp

@@ -56,8 +56,8 @@ namespace Opm
         /// for solving for the Jacobian
         double maxSinglePrecisionTimeStep_;
 
-        /// Maximum number of Newton iterations before we give up
-        int max_iter_;
+        /// Maximum number of Newton iterations before we give up on the CNV convergence criterion
+        int max_strict_iter_;
 
         /// Solve well equation initially
         bool solve_welleq_initially_;