In the absence of a requirement that a power of appointment be exercised by a reference to the power or by an express or specific reference to the power, a general residuary clause in a will, or a will making general disposition of all of the testator's property, expresses an intention to exercise a power of appointment held by the testator only if:
1. General power. The power is a general power exercisable in favor of the powerholder's estate and the creating instrument does not contain an effective gift if the power is not exercised; or
2. Intention to include property subject to the power. The testator's will manifests an intention to include the property subject to the power.