ItemPropertyDamageReduction

// JLR-OEI 04/03/06: This version is REPLACING the old DEPRECATED one.
// Returns Item property damage reduction.  You must specify:
// - nAmount: amount of damage reduction
// - nDmgBonus: (dependent on the nDRType)
//		- DR_TYPE_NONE:       ()
//		- DR_TYPE_DMGTYPE:    DAMAGE_TYPE_*
//		- DR_TYPE_MAGICBONUS: (DAMAGE_POWER_*)
//		- DR_TYPE_EPIC:       ()
//		- DR_TYPE_GMATERIAL:  GMATERIAL_*
//		- DR_TYPE_ALIGNMENT:  ALIGNMENT_*
//		- DR_TYPE_NON_RANGED: ()
// - nLimit: How much damage the effect can absorb before disappearing.
//   Set to zero for infinite
// - nDRType: DR_TYPE_*
itemproperty ItemPropertyDamageReduction(int nAmount, int nDRSubType, int nLimit=0, int nDRType=DR_TYPE_MAGICBONUS);