review (XS) for 6649622

[Paul Hohensee]

I think I remember ( :) ) that we did an alacrity run with 500 as the 
default
which showed no regressions.  So maybe we can make it the default instead
of putting it under AggressiveOpts.  Anyone else remember?

Paul

Tom Rodriguez wrote:
> http://webrev.invokedynamic.info/never/6649622
>