mention ntpd support for constraints in 57.html?

[Rob Pierce]

Good evening.

Since ntpd started supporting "constraints" in 5.7, maybe 57.html should 
reflect this?

Index: www/57.html
===================================================================
RCS file: /cvs/www/57.html,v
retrieving revision 1.92
diff -u -p -r1.92 57.html
--- www/57.html 6 Aug 2015 21:50:20 -0000       1.92
+++ www/57.html 28 Aug 2015 01:34:15 -0000
@@ -170,6 +170,7 @@ to 5.7.
     <li>The effects of the AI_ADDRCONFIG flag on <a 
href="http://www.openbsd.org/cgi-bin/man.cgi?query=getaddrinfo&amp;sektion=3";>getaddrinfo(3)</a>
 results are limited to DNS queries. This avoids erratic behavior with 
transient network problems, "raw" addresses and localhost entries in <a 
href="http://www.openbsd.org/cgi-bin/man.cgi?query=hosts&amp;sektion=5";>/etc/hosts</a>.
     <li><a 
href="http://www.openbsd.org/cgi-bin/man.cgi?query=gethostbyname&amp;sektion=3";>gethostbyname(3)</a>
 now no longer fails when more than 16 addresses/aliases are returned. The 
original pre-asr limit of 35 has been restored, with additional results being 
truncated.
     <li><a 
href="http://www.openbsd.org/cgi-bin/man.cgi?query=tftp&amp;sektion=1";>tftp(1)</a>
 now supports sending or receiving files larger than 65536 blocks in size.
+    <li><a 
href="http://www.openbsd.org/cgi-bin/man.cgi?query=tpd&amp;sec=8";>ntpd(8)</a> 
now supports authenticated TLS constraints.
     </ul>
 <p>