[GIT PULL] Audit patches for 4.7

Hi Linus, Four small audit patches for 4.7; two are simple cleanups around the audit thread management code, one adds a tty field to AUDIT_LOGIN events, and the final patch makes tty_name() usable regardless of CONFIG_TTY. Nothing controversial, and it all passes our regression test. Please

[GIT PULL] Audit patches for 4.7

Hi Linus, Four small audit patches for 4.7; two are simple cleanups around the audit thread management code, one adds a tty field to AUDIT_LOGIN events, and the final patch makes tty_name() usable regardless of CONFIG_TTY. Nothing controversial, and it all passes our regression test. Please