Log Message:
Update sysutils/collectd to 5.7.1.

2017-01-23, Version 5.7.1
- collectd: Handling of boolean configuration options has been unified.
  Thanks to Sebastian Harl. #2083, #2098
- collectd: Reporting of internal statistics has been fixed. Thanks to
  Florian Forster. #2108
- collectd, various plugins: Bugs and issues reported by scan-build and
  coverity-scan have been fixed. Thanks to Ruben Kerkhof and Florian
  Forster.
- Build system: Parallel build have been fixed. Thanks to Ruben Kerkhof.
  #2110
- DPDKStat plugin: Portability issues and a double-close bug have been
  fixed. Thanks to Ruben Kerkhof and Marc Fournier.
- Intel RDT plugin: A check for the libpqos library version has been
  added. Thanks to Serhiy Pshyk.
- NetApp plugin: Compilation problems have been corrected. Thanks to
  Florian Forster. #2120
- Write Prometheus plugin: A memory leak has been fixed. Thanks to Ruben
  Kerkhof.

2016-12-12, Version 5.7.0
- Documentation: The Turbostat plugin section has been improved. Thanks
  to Florian Forster
- Documentation: The semantics of the "TypesDB" option have been
  improved. Thanks to Florian Forster.
- collectd: A generic interface for parsing the text protocol has been
  added. Thanks to Sebastian Harl. #1749
- collectd: Threads now get named, making them easier to track using
  tools such as top, ps, etc. Thanks to Manuel Luis Sanmartín Rozada
  and Marc Fournier. #547
- AMQP plugin, Write Graphite plugin, Write Kafka plugin: The new
  "[Graphite]PreserveSeparator" option allows retaining the default dot
  separator rather than escaping it. Thanks to Florian Forster. #419
- Battery plugin: A StateFS backend for gathering statistics has been
  added. Thanks to Rinigus. #1795
- CPU plugin: CPU aggregation on AIX was fixed. Thanks to Chao Yang.
  #1957
- Collectd::Unixsock: Fractional seconds support has been made more
  robust. Thanks to Matthias Bethke. #2052
- DPDKStat plugin: This new plugin collects DPDK interface statistics.
  Thanks to Maryam Tahhan, Harry van Haaren, Taras Chornyi and Kim
  Jones. #1649
- gRPC plugin: The "DispatchValues" option has been renamed to
  "PutValues". Thanks to Florian Forster.
- HDDTemp plugin: The 32 devices limit has been removed. Thanks to
  Benjamin Gilbert. #631
- Hugepages plugin: This new plugin reports the number of used and free
  hugepages on Linux. Thanks to Jaroslav Safka, Maryam Tahhan, Kim Jones
  and Florian Forster. #1799
- Intel RDT plugin: This new plugin collects statistics exposed by
  Intel's Resource Director Technology . Thanks to SerhiyX. #1970
- memcached plugin: The new "Address" option allows connecting to a
  different server than specified by the "Host" option. Thanks to Pavel
  Rochnyack. #1975
- nginx plugin: Support for reporting failed connections has been added.
  Thanks to Pavel Rochnyack. #1609
- Perl plugin: Significant internal reworking has been made. The new
  "RegisterLegacyFlush" option has been added. Thanks to Pavel
  Rochnyack. #1731
- PostgreSQL plugin: Timestamps are now RFC 3339-formatted local time.
  Thanks to Igor Peshansky and Dave Cunningham. #1918
- Processes plugin: Internal performance improvements have been made.
  Thanks to Pavel Rochnyack. #1980, #1981
- RRDCacheD plugin: The plugin now tries to reconnect upon failed
  operations. Thanks to Sebastian Harl. #1959
- SpamAssassin: The plugin can now run in Perl's "tainted mode" \ 
("-T").
  Thanks to Akos Vandra. #1962
- Tail plugin: Support for calculating latency distribution of matching
  values has been added. Thanks to Pavel Rochnyack and Florian Forster.
  #1700
- Tail plugin: The new "GaugePersist" option has been added. Thanks to
  Florian Forster. #2015
- Target:Set, Target:Replace, Match:RegEx: MetaData support has been
  added . Thanks to Igor Peshansky. #1922, #1923, #1930
- turbostat plugin: The new "LogicalCoreNames" option allows switching
  to per-core naming rather than per-CPU. Thanks to Brock Johnson. #2056
- virt plugin: The new "BlockDeviceFormat" and
  "BlockDeviceFormatBasename" options help controlling the names
  reported for block-device metrics. Thanks to Deyan Chepishev. #2004
- Write Graphite plugin: A new "DropDuplicateFields" option has been
  added. Thanks to Michael Leinartas. #1915
- Write Kafka plugin: The "Key Random" setting has been reintroduced.
  Thanks to Florian Forster. #1977
- Write Log plugin: Support for formatting output in JSON has been
  added, using the new "Format" configuration option. Thanks to Igor
  Peshansky. #1924
- Write Prometheus plugin: This new plugin publishes values using an
  embedded HTTP server, in a format compatible with Prometheus'
  collectd_exporter. Thanks to Florian Forster. #1967