Set SA_SIGINFO. Rename thread to include perfetto.

This would work before because sa_handler and sa_sigaction are in a
union, so we also assigned sa_handler. Because we do not use
any of the arguments passed to the functions, our function is also a
valid sa_handler.

Change-Id: Ib637c6c81fde4279b552820495d38276c4a8f748
1 file changed