Remove AdaptiveStrategy in favor of PercentStrategy

In an attempt to get this merged, AdaptiveStrategy has
been removed and the permgen logic migrated to the
PercentStrategy. In addition, the default max_total for
PercentStrategy has been bumped to 48000 which gives a
default max for blitz (assuming RAM is sufficient) of
7200MB which is close enough to our production settings
to not matter.