Is RuntimePermission.accessClassInPackage now redundant?

[Mike Hearn]

Thanks. Those changes sound unlikely to cause compatibility issues. On the
other hand, if there's nothing motivating such a change then perhaps best
to let sleeping dogs lie. It's sufficient to know that new modules don't
need them.

I was exploring because the recent supply chain/package management attacks
on large tech firms make the intersection of JPMS and Java sandboxing look
increasingly relevant and interesting.