Add DamagePendingRegion.

DamagePendingRegion returns a pointer to the region of a drawable that will
be damaged by the current operation for damage records that chose to get damage
reported only at the end of the operation.

miext/damage/damage.c

@@ -1987,6 +1987,12 @@ DamageRegion (DamagePtr		    pDamage)
     return &pDamage->damage;
 }
 
+_X_EXPORT RegionPtr
+DamagePendingRegion (DamagePtr	    pDamage)
+{
+    return &pDamage->pendingDamage;
+}
+
 _X_EXPORT void
 DamageDamageRegion (DrawablePtr	pDrawable,
 		    RegionPtr	pRegion)

miext/damage/damage.h

@@ -75,6 +75,9 @@ DamageEmpty (DamagePtr pDamage);
 RegionPtr
 DamageRegion (DamagePtr		    pDamage);
 
+RegionPtr
+DamagePendingRegion (DamagePtr	    pDamage);
+
 void
 DamageDamageRegion (DrawablePtr	    pDrawable,
 		    const RegionPtr pRegion);