[aquaria] Patch to run Lua scripts as threads

[Andrew Church]

>> think I read that local variables are also faster than globals, though 
>> I can't recall the reference at the moment.
>
>They are faster; global variables go through a table lookup for each 
>access, locals do not.
>
>You'd be hard-pressed to call this a serious performance issue in 
>practice, though. But if you're benchmarking for just this, you'll find 
>locals are in fact cheaper in Lua.

As it happens, I'm running into serious cache thrashing issues on the
PSP, so who knows -- it just might make a difference. (:  But in any
case, I wasn't advocating that as the primary reason for switching,
just mentioning it as an added benefit.

  --Andrew Church
    achurch at achurch.org
    http://achurch.org/