Force PNG images to use the codec to determine the resolution as long as this is not implemented in the PNGReader.
Force PNG images to use the codec to determine the resolution as long as this is not implemented in the PNGReader.

git-svn-id: 102839466c3b40dd9c7e25c0a1a6d26afc40150a@232774 13f79535-47bb-0310-9956-ffa450edef68

argv-minus-one/fop,argv-minus-one/fop,StrategyObject/fop,StrategyObject/fop,spepping/fop-cs,StrategyObject/fop,spepping/fop-cs,StrategyObject/fop,spepping/fop-cs,spepping/fop-cs,Distrotech/fop,Distrotech/fop,argv-minus-one/fop,Distrotech/fop,argv-minus-one/fop,Distrotech/fop,argv-minus-one/fop,StrategyObject/fop