Log when the native trace is unavailable
Andy McFadden authored
This should allow us to differentiate between "couldn't get the
stack" and "didn't try to get the stack".  Also show the thread's
state (e.g. 'R' for running, 'D' for uninterruptible syscall).

Bug 7053953

(cherry-pick of b3667a19.)

Change-Id: I0a40cb3d3cdd9aef8589a39586cccd9c229aa8cb
c32a3774