don't save/load onelab.db by default: it confuses people

Common/DefaultOptions.h

@@ -1117,7 +1117,7 @@ StringXNumber SolverOptions_Number[] = {
     "Automatically archive output files after each computation" },
   { F|O, "AutoCheck" , opt_solver_auto_check , 1. ,
     "Automatically check model every time a parameter is changed" },
-  { F|O, "AutoSaveDatabase" , opt_solver_auto_save_database , 1. ,
+  { F|O, "AutoSaveDatabase" , opt_solver_auto_save_database , 0. ,
     "Automatically save database after each computation" },
   { F|O, "AutoMesh" , opt_solver_auto_mesh , 1. ,
     "Automatically mesh if necesssary" },