message: Use GetBoolArg for -resetguisettings
  Use GetBoolArg rather than mapArgs.count for boolean -resetguisettings
  arg. This prevents -resetguisettings=0 from resetting the gui settings.
diff: @@ -799,7 +799,7 @@ int main(int argc, char *argv[])
  // Allow parameter interaction before we create the options model
  app.parameterSetup();
  // Load GUI settings from QSettings
  - app.createOptionsModel(mapArgs.count("-resetguisettings") != 0);
  + app.createOptionsModel(GetBoolArg("-resetguisettings", false));
  // Subscribe to global signals from core
  uiInterface.InitMessage.connect(InitMessage);
  