ch-tree.h (build_compare_expr): Change first argument's type from `enum chill_tree_code' to `enum tree_code'.

        * ch-tree.h (build_compare_expr): Change first argument's type
        from `enum chill_tree_code' to `enum tree_code'.
        (build_compare_discrete_expr): Likewise.
        * expr.c (build_compare_set_expr): Likewise.
        (build_compare_string_expr): Likewise.
        (build_compare_expr): Likewise.
        (build_compare_discrete_expr): Likewise.  Also add default case in
        switch statement.
        (compare_int_csts): Add default case in switch statement.

From-SVN: r22643