Update nagios-base to 3.0.3. Changes since 2.12:

- Check timeperiod can now be modified on-the-fly.
- Added first_notification_delay to host and object definitions
  to delay first notification.
- Notifications are now sent out when flap detection is disabled
  on a host/service-specific or program-wide basis
  ($NOTIFICATIONTYPE$ macro = "FLAPPINGDISABLED").
- Notifications can now be sent out when scheduled downtime starts,
  ends, and is cancelled.  The $NOTIFICATIONTYPE$ macro will be set
  to "DOWNTIMESTART", "DOWNTIMEEND", or "DOWNTIMECANCELLED",
  respectively.  In order to receive downtime notifications,
  specify 's' or 'downtime' in contact, host, and/or service
  notification options.
- Added ability to use multiple template names (separated by commas)
  in object definitions.
- Added ability to null out optional character directives in object
  definitions (using 'null' without quotes).
- Added hostg/service/contactgroup_members directives to
  host/service/contactgroup definitions, respectively, for allowing
  including host, service, or contact members from "sub" groups.
- Added support for custom variables in host, service, and contact
  definitions.
- Added host_notifications_enabled, service_notifications_enabled,
  can_submit_commands to contact definitions.
- Added optional display_name directive to host and service definitions.
- Removed serviceextinfo definitions and merged variables with
  service definitions.
- Removed hostextinfo definitions and merged variables with host
  definitions.
- Services inherit contactgroups, notification interval, and
  notification period from associated host if not specified.
- Service escalations inherit contactgroups, notification interval,
  and escalation period from associated service if not specified.
- Host escalations inherit contactgroups, notification interval,
  and escalation period from associated host if not specified.
- Host, service, host escalation, and service escalation
  definitions now support a 'contacts' directive, along with
  'contact_groups'.
- Service dependencies with blank dependent host/hostgroup names
  will create "same host" dependencies.
- Added ability to precache object config files.
- Added ability to exclude object relationship and circular
  path checks from verification process.
- Multiline output support for host and service checks.
- Added $LONGHOSTOUTPUT$ and $LONGSERVICEOUTPUT$ macros.
- Added $TEMPPATH$ macro.
- Removed $COMMENTDATAFILE$ and $DOWNTIMEDATAFILE$ macros.
- Added $HOSTDISPLAYNAME$ and $SERVICEDISPLAYNAME$ macros.
- Custom host/service/contact macros accessible via $_HOST<varname>$,
  $_SERVICE<varname>$, or $_CONTACT<varname>$. On-demand host/service
  macros for custom vars are working.  Custom vars are also set as
  environment vars.
- On-demand service macros can contain and empty host name field.
  In this case, the name of the current host will be used.
- $HOSTNOTES$ and $SERVICENOTES$ macros may now contain macros
  themselves.
- Added flap_detection_options directive to host and service
  definitions to control which states (i.e. OK, WARNING, UNKNOWN,
  and/or CRITICAL) are used in flap detection logic.
- Percent state change and state history are now retained and
  recorded even when host/service flap detection is disabled.
- Hosts and services are immediately check for flapping when flap
  detection is enabled program-wide.
- Hosts/services that are flapping when flap detection is disabled
  program-wide are now logged.
- Added PROCESS_FILE external command to allow processing of
  external commands found in an external (regular) file.  Very
  useful for passive checks with long out put or scripting.
- Custom commands can now be submitted to Nagios.  Custom command
  names are prefixed with an underscore and are not processed
  internally by the Nagios daemon.  They may, however, be processed
  by NEB modules.
- External commands are now checked by default.  Nagios 2.x and
  earlier did not check for external commands by default.
- Contact status information is now saved (although it is not
  processed by the old CGIs).
- Contact status information is now retained across program
  restarts.
- Comment and downtime IDs are now stored across program restarts,
  should be unique unless reset.
- Added retained_host/service_attribute_mask variables to control
  what host/service attribs are retained globally.
- Added retained_process_host/service_attribute_mask variables to
  control what process attribs are retained.
- Added retained_contact_host/service_attribute_mask variables to
  control what contact attribs are retained globally.
- Scheduled downtime entries are now stored in the status and
  retention files.
- Comments are now stored in the status and retention files.
- Non-persistent acknowledgement comments are now deleted when the
  acknowledgement is removed (instead of when Nagios restarts).
- Most host checks are now run asynchronously, in parallel!
- Scheduled host checks now help improve performance, instead of
  hinder it (if caching is enabled).
- Added cached_host_check_horizon option for enabling use of
  cached host check results.
- Added enable_predictive_host_dependency_checks for enabling
  predictive checks of dependent hosts.
- Added retry_interval to host definitions.
- Added check_for_orphaned_hosts option and support for orphaned
  host checks.
- Passive host check states can now be translated from their
  original DOWN/UNREACHABLE state if the new
  translate_passive_host_results option is enabled.
- 'parallelize' option in service definitions deprecated/no longer
  used.
- Added cached_service_check_horizon option for enabling use of
  cached service check results.
- Added enable_predictive_service_dependency_checks for enabling
  predictive checks of dependent services.
- Host and service dependencies can now have a timeperiod during
  which they're valid (dependency_period directive).
- Updated NEB API version.
- Modified adaptive program status callback.
- Added adaptive contact status callback.
- Added host/service precheck callbacks to allow modules to
  cancel/override internal host/service checks.
- Added 'enable_embedded_perl' option to main config file to control
  whether epn is enabled/disabled.
- Added support for perl plugins to specify whether or not they
  should be run under the epn...  The second to tenth line of a perl
  plugin may start with '# nagios: +epn' or '# nagios: -epn' to
  explicity indicate that it should be run under the epn.
- Added 'use_embedded_perl_implicitly' option to main config file
  to determine whether or not perl plugins will use the epn if they
  don't explicitly allow/disalow it.
- Hostgroup and servicegroup summaries now show important/unimportant
  problem breakdowns like the TAC CGI.
- Minor layout changes to host and service detail views in extinfo CGI.
- More information given when testing scheduling (-s command line
  option).
- Removed fixed length restrictions for host names and service
  descriptions.
- Plugin output length restriction bumped up to 4K.
- Added temp_path directive to main config file for specifying temp
  directory.
- Multiline output support for system commands via my_system().
- Added global event_id and notification_id vars that are at least
  unique during a single run of Nagios.
- Default is now to check for orphaned services, rather than not.
- Renamed service_reaper_frequency to check_result_reaper_frequency.
- Fractional notification and check intervals are now supported
  (e.g. "3.5" minutes).
- Backslash chars are now used to escape command arguments that
  contain \ or ! characters.
- Added 'external_command_buffer_slots' and
  'check_result_buffer_slots' variables to specify size of internal
  buffers.
- Added check statistics to status file, available via nagiostats
  for graphing in MRTG.
- Added $HOSTGROUPNAMES$, $SERVICEGROUPNAMES$, $HOSTACKAUTHORNAME$,
  $HOSTACKAUTHORALIAS$, $SERVICEACKAUTHORNAME$, and
  $SERVICEACKAUTHORALIAS$ macros.
- Added warning for invalid temp_path directory.
- Added support for extended regular expression matching in
  object config files.
- Added new "p" option to host/service_perfdata_file_mode
  directives for pipes.
- Command definitions and host/service plugin perfdata with HTML
  should now be escaped in CGIs.
- Hostgroup and servicegroup definitions now have notes, notes_url,
  and action_url directives.
- Added buffer stats and check statistics to performance
  information in extinfo CGI.
- Removed legacy 2.x host check logic and use_old_host_check_logic
  option.
- Added max_check_result_file_age option to control processing of
  check results in older files.
- Added check_result_path option to set path used to store
  check results.
- New IPC method for passing host/service check results back to
  main daemon.
- Removed check_result_buffer_slots option from main
  configuration file.
- Added test for writeability of temp directory during configuration
  test.
- Minor changes to freshness threshold calculation.
- Added 'initial_state' option to host and service definitions
  to allow for non-UP/OK initial states.
- Changed debug file format to include current pid.
- Changes to sample config files and installation location.
- Expanded timeperiod definitions to allow for day/date exceptions.
- Added new 'passive_host_checks_are_soft' config option.
- Added new 'exclude' option to timeperiod definitions for
  easy on-call rotation definitions.
- Added new action and notes URL target frame options to CGI
  config file.
- Added optional integration with Splunk into the CGIs.
- Added escape_html_tags option to CGI config file to escape HTML
  tags in plugin output.
- Program status now updated at least every 5 seconds for addons
  that watch NDOUtils DB.
- Added $MAXHOSTATTEMPTS$ and $MAXSERVICEATTEMPTS$ macros.
- Added status CGI host/service property filters for hard and
  soft states.
- New macros: $SERVICEISVOLATILE$, $TOTALHOSTSERVICES$,
  $TOTALHOSTSERVICESOK$, $TOTALHOSTSERVICESWARNING$,
  $TOTALHOSTSERVICESUNKNOWN$, $TOTALHOSTSERVICESCRITICAL$,
  $HOSTDOWNTIMEAUTHOR$, $HOSTDOWNTIMEAUTHORNAME$,
  $HOSTDOWNTIMEAUTHORALIAS$, $HOSTDOWNTIMECOMMENT$,
  $SERVICEDOWNTIMEAUTHOR$, $SERVICEDOWNTIMEAUTHORNAME$,
  $SERVICEDOWNTIMEAUTHORALIAS$, $SERVICEDOWNTIMECOMMENT$.
- Improvements to the host check logic performance (more use of
  cached and parallel checks).
- Version number is now printed in CGI pages.
- Added custom delimiter option in nagiostats output (useful for
  CSV output).
- Alias, if not specified, now defaults to object name in host,
  hostgroup, servicegroup, contact, and contactgroup definitions.
- Added custom host and service notifications, with option to force
  the notifications and broadcast them to all contacts.
- Added new 'check' option to init script to verify configuration.
- More complete (but still partial) support for macros in CGIs
  ($xNOTES$, $xNOTESURL$, and $xACTIONURL$ macros).
- Added on-demand contact and contactgroup macro support.
- New macros: $HOSTGROUPMEMBERS$, $HOSTGROUPNOTES$, $HOSTGROUPNOTESURL$,
  $HOSTGROUPACTIONURL$, $SERVICEGROUPMEMBERS$, $SERVICEGROUPNOTES$,
  $SERVICEGROUPNOTESURL$, $SERVICEGROUPACTIONURL$, $CONTACTGROUPALIAS$,
  $CONTACTGROUPMEMBERS$, $NOTIFICATIONRECIPIENTS$, $NOTIFICATIONAUTHOR$,
  $NOTIFICATIONAUTHORNAME$, $NOTIFICATIONAUTHORALIAS$,
  $NOTIFICATIONCOMMENT$.
- Added support for relative paths in config_file and config_dir directives.
- Added passive check latency stats to nagiostats.
- Workaround to prevent browsers from incorrectly using cached
  statusmap image on page refresh.
- Added use_pending_states option to CGI config file to determine
  displayed state of hosts/services that have not been checked.
- Added $EVENTSTARTTIME$ macro to indicate time Nagios started
  processing events (checks, etc.).
- Improvements in freshness check logic.
- Added additional_freshness_latency config file directive.
- Improvement in service flap detection logic.
- Status file is no longer deleted during restarts due to a SIGHUP
  or external command.
- Special additive inheritance rule: escalation contact(group)(s)
  that begin with '+' will  now inherit from associated host/service
  definition if not inheriting from another escalation template.
- Addition of object pointers to event broker module data structures
  (may require event broker module rebuilds).
- Added $LASTHOSTSTATE$, $LASTHOSTSTATEID$, $LASTSERVICESTATE$, and
  $LASTSERVICESTATEID$ macros.
- Better error logging when failing to rename/move files.
- Summary macros are now available as regular (non-environment) macros
  if requested when large installation tweaks are enabled.
- Major overhaul (read: complete rewrite) of macro code, so macros are
  now only computed when found.
- Added enable_environment_macros option to determine whether or not
  macros are set as environment vars.
- Added $ISVALIDTIME:$ and $NEXTVALIDTIME:$ on-demand macros.
- Added new external commands to change modified object attributes
  (affecting data retention logic).
- Added new external commands to change notification period for
  host, services, and contact on-the-fly.
- Retention of host/service check scheduling options.
- Caching of Perl scripts now enabled by default if embedded Perl
  interpreter is compiled in.
- Increased max plugin output length cap from 4kb to 8kb.
- Additional functionality of additive inheritance feature.
- Added free_child_process_memory and child_processes_fork_twice
  options for performance tweaks.
- Added use_timezone option to allow Nagios instances to run in
  non-native timezones.
- Support for line continuation/breaks in config files - end lines with
  one back slash (\) to continue on next line.
- Auto-filled comment/author fields for acknowledging problems through
  WAP interface.
- Faster program startup times (especially in large installs) with new
  object lookup code.
- Nagios no longer warns or errors when encountering
  host/contact/service groups with empty memberships.
- Allow non-ASCII characters in notifications, etc.
- Smarter host check logic to reduce (uncached) on-demand host checks
  during "stable" service problems.
- New flap detection startup logic speedups when large installations
  tweaks enabled.
- Speed improvements during startup routines when using precached config.
- Speed improvements in reading retention data during startup.
- Changed embedded audio MIME types in CGIs to "application/wav".
- Safer loading mechanism for NEB modules to prevent segfaults in Nagios.
- Embedded Perl is now disabled by default.
- Misc internal performance improvements.
- More debug/trace log functionality.
- Internal data structure cleanups.
- Logging API revamp, cleanup.
- Error logging improvements.
- Various bugfixes.
- Documentation updates.

(tonnerre)