New component for testing FOR-AS-ON-LIST clauses.
Added test for FOR - ON with RETURN.
Added test for FOR - ON with SUM.
Added test for FOR - ON using dotted list.
Added another test for FOR - ON.
Added test for FOR - ON - BY.
Added another test for FOR - ON - BY.
Added test for FOR - ON - BY with non-trivial BY.
Added test for FOR - ON with destructuring.
Added test for FOR - ON with destructuring and NIL variable.
Added test for FOR - ON with destructuring and type declaration.
Added test for FOR - ON with destructuring and destrucuring type declaration.
Added another test for FOR - ON with destructuring and destrucuring type declaration.
Added test for FOR - ON with NIL variable and empty list.