Log Message:
Update collectd to 5.4.2.

- Build system: Numerous fixes.
- collectd: A use-after-free has been fixed in the parse_value() function.
- collectd: Fix carriage return sign in types_list
- collectd: Fix programming error in {{GitFile|src/configfile.c}}
- collectd: An off-by-one error has been fixed in the strstripnewline()
  function.
- collectd: Use the complain mechanism to report filter chain write failures.
- collectd: Spelling and grammar of error messages have been fixed.
- collectdctl: Fixed buffering issues which caused trouble on AIX and
  Solaris.
- Documentation: Details and example about multi-instance filterchain targets
  have been added.
- Documentation: The CollectStatistics option of the RRDCacheD plugin has
  been documented.
- Documentation: The Write Redis plugin has been documented.
- Documentation: The GraphiteSeparateInstances and GraphiteAlwaysAppendDS
  options of the AMQP plugin have been documented.
- Documentation: Documentation of the AutoLoadPlugin option has been improved.
- Aggregation plugin: utils_vl_lookup: A race when creating user objects has
  been fixed.
- CPU plugin: Temperature code for Mac OS X has been removed.
- cURL, cURL-JSON, cURL-XML and Write HTTP plugins: Call curl_global_init()
  in the plugins' init() callback.
- cURL and memcachec plugins: Fix calculation of gauge, average, minimum
  and maximum. Previously, they were calculated from the start of the daemon,
  which is not the documented behavior.
- cURL-JSON plugin: A bug, which triggered when two URLs with a long common
  prefix were configured, was fixed.
- DBI plugin: Compatibility with new versions of libdbi has been restored.
- Exec, UnixSock plugins: Fix parsing of the time option of the PUTNOTIF
  command.
- IPMI plugin: A conflict with the Java plugin over the SIGUSR2 signal
  has been fixed.
- Java plugin: Conversion from Java's time representation to collectd's
  representation has been fixed.
- Java plugin: Make sure cjni_thread_detach() is called on all paths.
- LogFile and SysLog plugins: Avoid total silence in case of
  a misconfiguration.
- Network plugin: Support for recent versions of gcrypt has been added.
- Network plugin: Robustness of the client connecting behavior has been
  improved.
- Python plugin: Don't create empty meta_data_t objects.
- Python plugin: Fix Py list length check in cpy_build_meta().
- Python plugin: The interval member was fixed to export seconds as a double.
- RRDtool and RRDCacheD plugins: A memory leak when creating RRD files
  has been fixed.
- SNMP plugin: Fix a memory leak.
- Statsd plugin: Support for samplerates in timer metrics was added.
- Swap plugin: Fix behavior under OpenVZ by making cached optional.
- Threshold plugin: Population of the time field in notifications has been
  added.
- libvirt plugin: Only gather stats for running domains.
- LVM plugin: An issue with Volume Groups (VGs) without Logical Volumes
  (LVs) has been fixed.
- Write Graphite plugin: Escape characters not supported by Graphite.
- Write HTTP plugin: Make callback names context-dependent.
- Write Redis plugin: A formatting bug, which resulted in totally unusable
  numbers being transmitted to Redis, was fixed.
- Write Riemann plugin: Receive acknowledge message when using TCP.