update changelog

ChangeLog

@@ -1,6 +1,17 @@
 For detailed changes, see the changes either in the OpenBSD CVS repository or
 the GitHub mirror.
 
+2015-01-27  OpenNTPD 5.7p3
+	* 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
 
 	* Switched the drift file from an unscaled frequency offset to ppm.