Any art assets made by CJ are likely to be considered public domain. He's never expressed any kind of enforcement over them which would essentially reduce his copyright claim to nil.
The only potential sticking point is the default font which is copyrighted by sierra but again, lack of enforcement means their claim is also likely to be nil.
If you're really anal about licensing and stuff then the actual answer is that both are unlicensed and thus proprietary by default and shouldn't be used.
The only potential sticking point is the default font which is copyrighted by sierra but again, lack of enforcement means their claim is also likely to be nil.
If you're really anal about licensing and stuff then the actual answer is that both are unlicensed and thus proprietary by default and shouldn't be used.