Add news blurb about the micro-architecture attacks driven by

speculative execution on Intel, Arm and AMD cpus.

Submitted by:	pi@ (with language tweaks)
Reviewed by:	brd@

share/xml/news.xml

@@ -28,6 +28,27 @@
     $FreeBSD$
   </cvs:keyword>
 
+  <year>
+    <name>2018</name>
+    <month>
+      <name>1</name>
+      <day>
+	<name>4</name>
+
+	<event>
+	   <p>About the <a href="https://meltdownattack.com/">Meltdown</a>
+	   and <a href="https://spectreattack.com/">Spectre</a> attacks:
+	   FreeBSD was made aware of the problems in late December 2017.
+	   We're working with CPU vendors and the published papers on
+	   these attacks to mitigate them on FreeBSD. Due to the
+	   fundamental nature of the attacks, no estimate is yet
+	   available for the publication date of patches.</p>
+	</event>
+      </day>
+    </month>
+
+  </year>
+
   <year>
     <name>2017</name>