tstatus.exp: use UNSUPPORTED for optional features that are not supported

[Yao Qi]

Pedro,
The patch looks pretty good to me.

On 03/06/2013 03:02 AM, Pedro Alves wrote:
> +    set test "tstatus reports trace note"
>       gdb_test_multiple "tstatus" "check on trace status" {
                                     ^^^^^^^^^^^^^^^^^^^^^^ use $test here.

-- 
Yao (齐尧)