Preheat the oven to 350F. Coat an 8″x8″ pan with oil. Sift together flour, cornmeal, baking powder, baking soda, sugar, and salt into a large bowl. In a separate bowl whisk together eggs, oil, buttermilk, and orange zest. In a third bowl combine cranberries, pecans, and oatmeal. Sprinkle a tablespoon of flour mixture over them, and toss well.
Quickly combine flour mixture and egg mixture, using as few strokes as possible. Gently stir in the cranberry mixture. The batter should be stiff. Spoon batter into prepared pan and bake 45-55 minutes. Check two-thirds of the way through the baking period; if the loaves are browning excessively, tent them loosely with foil.
Let the baked bread cool for 10 minutes in the pan, then run a thin knife around the edge of the pan and turn the loaf out. Drizzle with glaze: in a saucepan, combine powdered sugar, orange juice, Cointreau, cinnamon, and five-spice powder. Bring to a boil and cook, stirring constantly, until reduced to a thick glaze. (This will go fast - watch it!) Pour it on, baby.