Cake: Cream margarine and sugar together until light and fluffy. Add eggs one at a time beating well after each addition. Mix together the baking soda and buttermilk. Combine flour and salt and add to creamed mixture 1 cup at a time alternating with the buttermilk. Beat well after each addition. Stir in the flavorings and bake for 1 hour and 15 minutes at 350{F in a 10 inch Bundt pan. Cool 10 minutes and remove from pan. Lemon glaze:* Mix all ingredients in a small bowl and pour over the cake allowing to drip over the edges.