Toolbox: |ps -t| now correctly displays the USER for threads

use tid to display thread information

Bug: https://code.google.com/p/android/issues/detail?id=198564
Bug: http://b/26470660


Signed-off-by: "Phani (Gargey) Avadhanam" <pgargey@codeaurora.org>
Change-Id: Ife8ce59d7b6eb6906ab39acebea18c7aee50339a