sysklogd v2.8.0

Changes

• Add pri action option, e.g. *.* /var/log/messages ;pri, to always print
  the message priority in the header, in the format in use (RFC3164 or
  RFC5424). By Gavin D. Howard. The NetBSD-style + destination prefix is
  an equivalent alternative, e.g. *.* +/var/log/messages, and combines with
  the - no-sync prefix as +-
• Add hostname=NAME action option to replace the hostname in messages
  logged by that action, e.g. to forward under a fixed name from a system
  whose hostname changes
• Add sd=[SD-ELEMENT] action option to append a structured data element
  to every message logged by that action. RFC5424 format only
• logger now parses a leading <LEVEL> (PRI) in input messages, e.g. for
  systemd-style daemon --foreground 2>&1 | logger redirection
• Add security policy for reporting vulnerabilities

Fixes

• Fix #105: UTF-8 handling with the -8 flag. Multi-byte sequences, e.g.,
  em-dash, were corrupted by byte-by-byte sanitization; complete valid UTF-8
  sequences are now preserved, including the RFC 5424 BOM
• Unescape Linux /dev/kmsg C-style \xHH encoding before sanitization, so
  UTF-8 in kernel messages is preserved with the -8 flag
• Fix #104: RFC 3164 tag parsing of parenthesized tags. Surrounding parens are
  stripped from complete tags, (polkit-agent): becomes polkit-agent, while
  partial tags like app(version): are preserved
• logger: fix evaluation order violation, found by Coverity Scan