Using proper copyright date range (10980). r=slamm, btoring. a=jar

xpfe/global/resources/content/about.html

@@ -53,7 +53,7 @@ LINK="#0000EE" VLINK="#551A8B" ALINK="#FF0000">
 <ul>
 <li>Copyright 2000 by <a href="http://www.mozilla.org/credits/">Contributors</a> to the Mozilla codebase under the <a href="http://www.mozilla.org/MPL/">Mozilla Public License</a> and <a href="http://www.mozilla.org/NPL/">Netscape Public License</a>.  All Rights Reserved.</li>
 <li>Portions of this software are copyright &copy; 1994 The Regents of the University of California.  All Rights Reserved.</li>
-<li>Portions of this software are copyright &copy; 1997-1998, 1999 <A HREF="http://www.fullsoft.com/">Full Circle Software, Inc.</A></li>
+<li>Portions of this software are copyright &copy; 1997-1999 <A HREF="http://www.fullsoft.com/">Full Circle Software, Inc.</A></li>
 </ul>
 
 <P><FONT SIZE=-1>U.S. GOVERNMENT END USERS. The Software is a &quot;commercial