title: use clisp to download website
body: <p>I am trying to use clisp to dump webpages like, e.g. to define a function "read-url", such that (read-url "http://www.kernel.org/index.html") would display the html source code like:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;
  &lt;!-- $Id: index.shtml,v 1.422 2012/02/09 17:13:11 root Exp $ --&gt;
  
  
  
  &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt;
  &lt;head&gt;&lt;meta http-equiv="Content-Type" content="text/html; charset=utf-8" /&gt;
  
    &lt;title&gt;The Linux Kernel Archives&lt;/title&gt;
    &lt;link rel="icon" type="image/png" href="favicon.ico" /&gt;
    &lt;link rel="alternate" type="application/rss+xml"
          title="Latest Linux Kernel Version RSS"
          href="http://kernel.org/kdist/rss.xml" /&gt;
    &lt;link rel="stylesheet" href="/kernel.css" type="text/css" /&gt;
  ......
  </code></pre>
  
  <p>does anyone know how?
  Many thanks!!</p>