Status Bolts / Arrows Fix

[lautan]

I fixed all the special arrows and bolts. Sleep bolts, acid bolts, ice arrow etc additional effects. Here is a rundown:

All bolts and arrows take elemental resistance into account.
Sleep bolts / arrows now work and have a varrying sleep duration.
Bloody bolts no longer work on undead.
Acid, poison, blind will overwrite current poisons and blinds. Reseting the duration.
Defense down, poison and blind can be resisted based on elemental resistance.

[whasf]

Committed in r2250