MFC:

MFC:
	pam_unix.c	1.52
	pam_unix.8	1.13

  In account management, verify whether the account has been locked
  with `pw lock', so that it's impossible to log into a locked account
  using an alternative authentication mechanism, such as an ssh key.
  This change affects only accounts locked with pw(8), i.e., having a
  `*LOCKED*' prefix in their password hash field, so people still can
  use a different pattern to disable password authentication only.

  Mention all account management criteria in the manpage.

PR:		bin/71147