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.

index.html

@@ -47,7 +47,6 @@ then consider making pull requests against the
 <B>IOCCC home page</B> |
 <A HREF="index.html#enter">How to enter</A> |
 <A HREF="faq.html">FAQ</A> |
-<A HREF="mirror.html">Mirrors</A> |
 <BR>
 <A HREF="index.html#news">IOCCC news</A> |
 <A HREF="winners.html">People who have won</A> |
@@ -118,12 +117,12 @@ the <B>mkiocccentry tool</B> are welcome via a
 or by filing a
 <A HREF="https://github.com/ioccc-src/mkiocccentry/issues">GitHub issue</A>,
 or by sending
- <A HREF="https://www.ioccc.org/judges.html">Email to the IOCCC judges</A>.
+ <A HREF="/judges.html">Email to the IOCCC judges</A>.
 </UL><BR>
 
 <LI TYPE=none><B>2021-12-27</B>
 <UL><LI TYPE=square>
-<A HREF="https://www.ioccc.org/judges.html">The Judges</A>
+<A HREF="/judges.html">The Judges</A>
 are continuing to work on re-tooling how we run the IOCCC.
 We are writing tools under various repositories our
 <A HREF="https://github.com/ioccc-src">IOCCC GitHub organization site</A>.
@@ -137,14 +136,14 @@ Stay tuned!
 <A NAME="IOCCC28-in-2022"></A>
 <LI TYPE=none><B>2021-10-21</B>
 <UL><LI TYPE=square>
-<A HREF="https://www.ioccc.org/judges.html">The Judges</A>
+<A HREF="/judges.html">The Judges</A>
 are re-tooling how we run the IOCCC.
 Our goal is to build a smoother, more rapid process centered around
 <A HREF="https://github.com/ioccc-src/winner">GitHub</A>.
 <P>
 For example, when we announce the winners,
 we will do so by committing their code to the
-<A HREF="https://www.ioccc.org/years.html">Winning entries</A>
+<A HREF="/years.html">Winning entries</A>
 of the IOCCC repo, so that people will be able immediately
 view the winning source.
 <P>
@@ -173,19 +172,13 @@ We apologize for the Email outage of the past few days.
 Email to/from <B>*@ioccc.org</B> has been disabled.
 We expect restore Email service in a few days.
 When we do, we will announce restoration of Email service here.
-<LI TYPE=square>We sure to use URLs of the form <B>https://www.ioccc.org/*</B> that
-include the <B>www.</B> when accessing the
-<A HREF="index.html">IOCCC</A> web site.
 </UL><BR>
 
 <LI TYPE=none><B>2020-12-31</B>
 <UL><LI TYPE=square>Released the
-<A HREF="http://www.ioccc.org/years.html#2020">winners of the 27<sup>th</sup> IOCCC</A>.
+<A HREF="/years.html#2020">winners of the 27<sup>th</sup> IOCCC</A>.
 <LI TYPE=square>Moved the <B>IOCCC</B> source tree and web site to
 <A HREF="https://github.com/ioccc-src/winner">GitHub</A>.
-To access <B>IOCCC</B>, use
-<A HREF="https://www.ioccc.org/index.html">www.ioccc.org</A>, as
-use of URLs with just <I>ioccc.org</I> without the <B>www.</B> is not supported.
 </UL><BR>
 
 <LI TYPE=none><B>2020-07-25</B>