Added further XQuery 3.0 String Conatentaion Expression tests
Added further XQuery 3.0 String Conatentaion Expression tests

sol/pygments,sol/pygments,sol/pygments,sol/pygments,sol/pygments,sol/pygments,sol/pygments,sol/pygments,sol/pygments,sol/pygments,sol/pygments,sol/pygments,sol/pygments,sol/pygments