Ingredients 2 broiler chickens (3 lbs ea. split) -- backbones removed 1/4 cup vegetable oil 8 tablespoons butter, melted 1/2 cup dry white wine or 1/3 cup lemon juice 2 teaspoons dried rosemary, crushed 1/2 clove garlic, optional 1 teaspoon salt freshly ground black pepper - to taste DIRECTIONS Prepare the grill by placing an oiled rack 4-6 inches over medium-hot coals.…