Changes of stats.

NPCs' attack and damage absorption levels are now lowered (instead of
being raised) by 5% per level of Curse spell applied on the NPC.

The player's critical strike chance now depends on values set in melee
weaponry scripts (SETEQUIP CRITICAL) and is properly affected by the
words of power.

The player's armor class, magic resistance, poison resistance and
inflict damages now depend on buffed attributes and skills instead of
base ones.

The player's health and mana replenishing effects of the MAX and MAR
words of power are now capped with regard to Constitution and Mental
buffs.