move include syntax to core-syntax library
move include syntax to core-syntax library

ktakashi/picrin,leavesbnw/picrin,koba-e964/picrin,ktakashi/picrin,picrin-scheme/picrin,koba-e964/picrin,leavesbnw/picrin,omasanori/picrin,dcurrie/picrin,leavesbnw/picrin,omasanori/picrin,ktakashi/picrin,picrin-scheme/picrin,dcurrie/picrin,koba-e964/picrin