Minor fixes of install script.
Minor fixes of install script.

otherwiseopen/racr,otherwiseopen/racr,2bt/racr,otherwiseopen/racr,2bt/racr,2bt/racr,2bt/racr,2bt/racr,otherwiseopen/racr,christoff-buerger/racr,christoff-buerger/racr,otherwiseopen/racr,otherwiseopen/racr,2bt/racr,christoff-buerger/racr