Fix parsing of "output-directory" command line argument.
Fix parsing of "output-directory" command line argument.

tzapzoor/marble,Earthwings/marble,oberluz/marble,AndreiDuma/marble,oberluz/marble,tzapzoor/marble,Earthwings/marble,AndreiDuma/marble,tzapzoor/marble,quannt24/marble,utkuaydin/marble,AndreiDuma/marble,oberluz/marble,tucnak/marble,utkuaydin/marble,David-Gil/marble-dev,adraghici/marble,AndreiDuma/marble,adraghici/marble,quannt24/marble,utkuaydin/marble,probonopd/marble,tucnak/marble,probonopd/marble,tzapzoor/marble,tzapzoor/marble,probonopd/marble,probonopd/marble,utkuaydin/marble,probonopd/marble,adraghici/marble,quannt24/marble,Earthwings/marble,rku/marble,tzapzoor/marble,oberluz/marble,David-Gil/marble-dev,tucnak/marble,David-Gil/marble-dev,David-Gil/marble-dev,Earthwings/marble,quannt24/marble,tucnak/marble,rku/marble,tzapzoor/marble,probonopd/marble,David-Gil/marble-dev,quannt24/marble,Earthwings/marble,tzapzoor/marble,oberluz/marble,tucnak/marble,utkuaydin/marble,adraghici/marble,rku/marble,tucnak/marble,AndreiDuma/marble,quannt24/marble,David-Gil/marble-dev,probonopd/marble,tucnak/marble,AndreiDuma/marble,quannt24/marble,adraghici/marble,rku/marble,oberluz/marble,rku/marble,rku/marble,Earthwings/marble,utkuaydin/marble,adraghici/marble