add 6.7 changes, update format to match LibreSSL

ChangeLog

@@ -1,101 +1,150 @@
-For detailed changes, see the changes either in the OpenBSD CVS repository or
-the GitHub mirror.
+The OpenNTPD Portable project copies portions of the OpenBSD tree, along
+with relevant portions of the C library, to a Git repository. This makes it
+easier to follow all of the relevant changes to the upstream project in a
+single place:
 
-OpenNTPD 6.7p0
+	https://github.com/openntpd-portable/openntpd-openbsd
+
+The portable bits of the project are largely maintained out-of-tree, and their
+history is also available from Git.
+
+	https://github.com/openntpd-portable/openntpd-portable
+
+OpenNTPD Portable Release Notes:
+
+6.7p1 -  New release based on OpenBSD 6.7
 
 	* ntpd now does constraint validation against 9.9.9.9 and 2620:fe::fe by default.
+
 	* The ntpd daemon now gets and sets the clock in a secure way when booting
 	  even when a battery-backed clock is absent.
+
 	* Improvements in DNS resolving and constraints checking, especially during
 	  startup. Unreliable NTP peers are removed from the pool and DNS resolving
 	  is repeated to add replacements.
+
 	* Improved reliability and security of TLS constraint checking.
+
 	* Improved logging of failure cases.
+
 	* Prevent the case of multiple ntpds running at once by checking presence
 	  of the local control socket.
+
 	* TLS certificates are now searched in TLS_CA_CERT_FILE.
 
-2017-09-17  OpenNTPD 6.2p3
+	The libtls library, as shipped with LibreSSL 3.1.0 or later, is
+	required to use the HTTPS constraint feature, though it is not
+	required to use OpenNTPD.
+
+6.2p3 - Bug fixes
 
 	* Fixed build on OS X
 
-2017-09-07  OpenNTPD 6.2p2
+6.2p2 - Bug fixes
 
 	* Fixed support for 'query from' and clarified usage.
 
-2017-07-13  OpenNTPD 6.2p1
+6.2p1 - New release based on OpenBSD 6.2
 
 	* Added option "query from <ip>" to ntpd.conf, to specify a local IP
 	  address for outgoing NTP queries.
 
-2017-07-13  OpenNTPD 6.1p1
+6.1p1 - New release based on OpenBSD 6.1
 
 	* Quieted warnings about constraint connection retries.
+
 	* Implemented fork+exec for ntpd child processes.
+
 	* Added imsg inter-process reliability fixes.
+
 	* Fixed memory leaks and reduced heap memory usage.
+
 	* Numerous logging improvements and additions.
+
 	* Added macOS 10.12 getentropy support.
+
 	* Fixed arc4random blacklist use native implementations where
 	  possible.
 
-2016-05-30  OpenNTPD 6.0p1
+6.0p1 - New release based on OpenBSD 6.0
 
 	* Fixed a link failure on older Linux distributions and a build
 	  failure on FreeBSD.
+
 	* Set MOD_MAXERROR to avoid unsynced time status when using
 	  ntp_adjtime.
+
 	* Fixed HTTP Timestamp header parsing to use strptime in a more
 	  portable fashion.
+
 	* Hardened TLS for ntpd constraints, enabling server name
 	  verification. Thanks to Luis M. Merino.
 
-2016-03-29  OpenNTPD 5.9p1
+5.9p1 - New release based on OpenBSD 5.9
 
 	* When a single "constraint" is specified, try all returned addresses
 	  until one succeeds, rather than the first returned address.
+
 	* Relaxed the constraint error margin to be proportional to the number
 	  of NTP peers, avoid constant reconnections when there is a bad NTP
 	  peer.
+
 	* Removed disabled hotplug sensor support.
+
 	* Added support for detecting crashes in constraint subprocesses.
+
 	* Moved the execution of constraints from the ntp process to the
 	  parent process, allowing for better privilege separation since the
 	  ntp process can be further restricted.
+
 	* Added pledge(2) support.
+
 	* Updated to require LibreSSL 2.3.2 or greater.
+
 	* Fixed high CPU usage when the network is down.
+
 	* Fixed various memory leaks.
+
 	* Switched to RMS for jitter calculations.
+
 	* Unified logging functions with other OpenBSD base programs.
 
 	OpenNTPD portable-specific changes:
 
 	* Added support for syncing time with the Realtime Clock (RTC) on OSes
 	  that require it.
+
 	* CFLAGS is no longer overridden by the build system.
+
 	* FreeBSD RTABLE support is disabled
+
 	* FreeBSD is no longer linked with -lmd to avoid hash function
 	  collisions, causing failures in constraint certificate loading.
+
 	* Fixed crashes due to __progname being used before initialized.
+
 	* Added Solaris 10 compatibility.
+
 	* Added --disable-https-constraint build option for explicitly
 	  disabling constraint support.
+
 	* Synced build system files with LibreSSL
 
 	The libtls library, as shipped with LibreSSL 2.3.2 or later, is
 	required to use the HTTPS constraint feature, though it is not
 	required to use OpenNTPD.
 
-2015-03-24  OpenNTPD 5.7p4
+5.7p4 - Bug fixes, HTTPS constraint support with LibreSSL 
 
 	* Added support for HTTPS constraints to validate NTP responses.
 	  See the man page and example config file for how to configure it.
 	  The initial announcement:
 	  http://marc.info/?l=openbsd-tech&m=142356166731390&w=2 is an
 	  explanation of the rationale and how the feature works.
+
 	* Workaround an apparent bug in Solaris adjtime that cause the clock
 	  to report sync/unsync continuously.
+
 	* Workaround an issue on systems with 32-bit time_t that causes an
 	  overflow if the system time is later than early 2036.
 
@@ -103,41 +152,55 @@ OpenNTPD 6.7p0
 	required to use the HTTPS constraint feature, though it is not
 	required to use OpenNTPD.
 
-2015-01-27  OpenNTPD 5.7p3
+5.7p3 - Bug fixes
+
 	* Fixed issue resolving hostnames when the network is initially
 	  unavailable.
+
 	* Fixed process name logging on Linux and OS X.
+
 	* Fixed adjfreq failures on Solaris due to uninitialized struct timex.
+
 	* Support building on Linux musl libc.
+
 	* Default privilege separation directory changed from /var/empty/ntp
 	  to /var/empty. Please ensure that if you are using the default from
 	  previous releases that the privsep directory is empty, owned by
 	  root, and has no write privileges for other users.
 
-2015-01-20  OpenNTPD 5.7p2
+5.7p2 - Bug fixes, and new OS support
 
 	* Switched the drift file from an unscaled frequency offset to ppm.
 	  The latter format is compatible with that of ntp.org.  This allows
 	  easy switching between ntpd daemons
+
 	* Fixed a memory leak in DNS lookups.
+
 	* Added support for setting the process title on Linux and OS X.
 	  The different processes are now possible to tell apart by role in
 	  the process list.
+
 	* Import NetBSD support.
+
 	* Various bugfixes and refinements from the community.
 
-2015-01-08  OpenNTPD 5.7p1
+5.7p1 - New release based on OpenBSD 5.7
 
 	* Support for a new build infrastructure based on the LibreSSL
 	  framework. Source code is integrated directly from the OpenBSD tree
 	  with few manual changes, easing maintenance.
+
 	* Removed support for several OSes pending test reports and updated
 	  portability code.
+
 	* Supports the Simple Network Time Protocol version 4 as described in
 	  RFC 5905
+
 	* Added route virtualization (rdomain) support.
+
 	* Added ntpctl(8), which allows for querying ntpd(8) at runtime.
+
 	* Finer-grained clock adjustment via adjfreq / ntp_adjtime where
 	  available.
-	* Improved latency on heavily-loaded machines.
 
+	* Improved latency on heavily-loaded machines.