Extra logging in pthread_create.

pthread_create returns EAGAIN when it can't allocate a pthread_internal_t,
when it can't allocate a stack for the new thread, or when clone(2) fails
because there are too many threads. It's useful to be able to know why your
pthread_create just failed, so add some logging.

Bug: 8470684

(cherry picked from commit cfa089df23ff50fcd5ed3854c54991d30be5fc7e)

Change-Id: Ibfc98a84c1817a931f9ae4c2b88762f0edfb6b79
1 file changed