ba56d0a513
non standard extension, but widely available to obtain attributes for a thread. also provides an alias for pthread_getattr_np which is the bsd equivalent. Change-Id: I26ef8245ed2537186f48c8b8bdf3e42b03e70892 Reviewed-on: https://review.haiku-os.org/c/1172 Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>