Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit

Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit

Pull audit updates from Paul Moore:
 "Seven audit patches for 4.4, but really only one of any significant
  value, the remainder are trivial cleanups that are described well
  enough in the patch descriptions.

  The one significant patch is an attempt to make communication between
  the kernel's audit subsystem and the userspace audit daemon a bit more
  robust by retrying on certain transient error conditions.  All in all,
  it's a pretty small set of patches this time around with just fixes
  and cleanups"

* 'upstream' of git://git.infradead.org/users/pcmoore/audit:
  audit: make audit_log_common_recv_msg() a void function
  audit: removing unused variable
  audit: fix comment block whitespace
  audit: audit_tree_match can be boolean
  audit: audit_string_contains_control can be boolean
  audit: audit_dummy_context can be boolean
  audit: try harder to send to auditd upon netlink failure