1.4.9b Hotfix Release

Tweaked melee attack range a bit.
Tweaked a few stats.
Tweaked some spawn rates.
Added dynamic persistence (Pinkies will no spawn and despawn like other
Nether mobs, but once taken out the Nether or fed/bred, they will become
persistent and no longer despawn).
All Nether Mobs now have really high spawn weights, Pigmen now use theri
default weight of 100.
Cinders now spawn as AMBIENT creatures by default, works really well,
preventing them from interfering with other mob spawns when there is no
fire.