Update sysutils/rsyslog to 8.27.0

Version 8.27.0 [v8-stable] 2017-05-16
- imkafka: add module
- imptcp enhancements:
  * optionally emit an error message if incoming messages are truncated
  * optionally emit connection tracking message (on connection create and
    close)
  * add "maxFrameSize" parameter to specify the maximum size permitted
    in octet-counted mode
  * add parameter "discardTruncatedMsg" to permit truncation of
    oversize messages
  * improve octect-counted mode detection: if the octet count is larger
    then the set frame size (or overly large in general), it is now
    assumed that octet-stuffing mode is used. This probably solves a
    number of issues seen in real deployments.
- imtcp enhancements:
  * add parameter "discardTruncatedMsg" to permit truncation of
    oversize messages
  * add "maxFrameSize" parameter to specify the maximum size permitted
    in octet-counted mode
- imfile bugfix: "file not found error" repeatedly being reported
  for configured non-existing file.
- imfile: in inotify mode, add error message if configured file cannot
  be found
- imfile: add parameter "fileNotFoundError" to optinally disable
  "file not found" error messages
- core: replaced gethostbyname() with getaddrinfo() call
- omkafka: add "origin" field to stats output
- imuxsock: rate-limiting also uses process name
  both for the actual limit procesing as well as warning messages emitted
- Added new module: KSI log signing ver. 1.2 (lmsig_ksi_ls12)
- rsylsog base functionality now builds on osx (Mac)
- build now works on solaris again
- imfile: fix cross-platform build issue
- bugfix core: segfault when no parser could parse message
- bugfix core: rate-limit internal messages when going to external log system
- bugfix core: when obtaining local hostname, a NULL pointer could be
  accessed.
- bugfix core: on shutdown, stderr was written to, even if alrady closed
- bugfix core: perform MainqObj destruction only when not NULL already
- bugfix core: memory leak when internal messages not processed internally
- bugfix imptcp: potential overflow in octet count computation
  when a very large octet count was specified, the counter could overflow

(fhajny)