Check BD-J capability on demand, cache results
Check BD-J capability on demand, cache results

Azzuro/libbluray,ShiftMediaProject/libbluray,Azzuro/libbluray,Azzuro/libbluray,ace20022/libbluray,ShiftMediaProject/libbluray,ShiftMediaProject/libbluray,ace20022/libbluray,ShiftMediaProject/libbluray,ace20022/libbluray,Azzuro/libbluray,ace20022/libbluray