Remove almost all absolute URLs for this site

In a number of cases, an absolute URL for www.ioccc.org
was replaced with a document root relative URL.

In some cases the absolute URL was removed.

Removed mirror request pages.

2011/dlowe/hint.html

@@ -36,9 +36,10 @@ NOTE: The directory entries MUST end in a /
 
 <h3>Try:</h3>
 
-<pre><code>Download the dlowe-aux-data.tar.bz2 file from:
-
-    curl -O http://www.ioccc.org/2011/dlowe/dlowe-aux-data.tar.bz2
+Download the
+<a href="/2011/dlowe/dlowe-aux-data.tar.bz2">2011 dlowe entry dlowe-aux-data.tar.bz2</a>
+file and then:
+<pre><code>
 
 tar -jxf dlowe-aux-data.tar.bz2