mac OSX aside, the most common answer to "if you can't
beat 'em?" is "join 'em", not "rewrite your codebase in java."
Especially since mod_aolserver and ns_isapi are already out
there.
I'm definitely not the guy to figure out which
re-implementation makes the most sense. Sure, making
mod_AOLServer perform acceptibly seems like a much easier
way to go than Jacl. My point is that nobody is working on
any of these options right now, AFAICT.