sceAppContentCheckBundleLicenseOnDisc and sceAppContentGetPlayableStatus
answer NOT_FOUND for any label, as dlc_emu does for content it does not
know, after the initialization guard, the null checks and the padded
label check from SDK 0x01500000 or 0x03500000. sceAppContentGetGameTrialsFlag
writes 0, as dlc_emu does. The prototypes are dlc_emu's.
