Preheat oven to 350-degrees F. In a large bowl, combine flour, cornmeal, salt, baking powder, cinnamon and nutmeg. Cut in butter with a fork until very small beads are formed. Add pumpkin and maple syrup, mix well and turn out onto well floured work surface. Knead for at least 2 minutes, adding more flour as needed to prevent sticking and until it is smooth; divide in half. Roll out one half into a 10-5-inch rectangle. Spread half the preserves evenly to within 1-inch of all sides. Working from the long side, roll up rather tightly, pinching to seal. With the seal side facing up, use a knife to cut half-way through the length of the 'rope', fron one end to the other.