stab_map_.m: move saved file to subfolder´

(cherry picked from commit e754ec15)

matlab/gsa/stab_map_.m

@@ -696,7 +696,7 @@ else
 end
 
 xparam1=x0;
-save prior_ok.mat xparam1;
+save([OutputDirectoryName filesep 'prior_ok.mat'],'xparam1');
 
 options_.periods=opt.periods;
 if isfield(opt,'nomoments')