Drain fruits, reserving syrups. Blend cream cheese and next 3 ingredients. Reserve 2 tablespoons pineapple; stir remainder into cheese mixture. Spread over bottom of pastry shell; chill. Blend quarter cup sugar, cornstarch, and salt. Combine reserved syrups; measure 1+ half cups; blend into cornstarch mixture. Cook and stir till thickened. Stir in blueberries and lemon juice; cool. Pour over cheese layer; chill. Top with whipped cream and reserved pineapple.