MFC r245961 r245962 r245963.

MFC r245961 r245962 r245963.

MFC r245961:
  When the 'R' flag is used with a newsyslog.conf entry, some fields of
  the corresponding struct sigwork_entry were left uninitialized,
  potentially causing an early return from do_sigwork(). Ensure that these
  fields are initialized, and handle the 'R' flag properly in
  do_sigwork().

MFC r245962:
  Ensure that newsyslog -n prints the correct message for a rotation rule
  that uses the 'R' flag.

MFC r245963:
  Rename the run_cmd field to sw_runcmd to make it consistent with the
  other fields in struct sigwork_entry.

Approved by:	emaste (co-mentor)

git-svn-id: svn://svn.freebsd.org/base/stable/8@246919 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f