Java updates

[Sean Kelly]

== Quote from bearophile (bearophileHUGS at lycos.com)'s article
>
> - Compressed pointer 64 bit VM (This is very useful, but I think it's not easy to do in 64-bit-D with
pointers. References look more doable).

Compressed pointers would just have to be a new type.  But it's more
likely that we'd just create a struct for this in D, seeing as how we
have opDot now.


Sean