Update FAQ, rules/guidelines etc. for #208

This commit also removed some of the 'new marks' in the guidelines and
rules (as they're no longer new) and some that were in the FAQ (which
only happened when they were changed over to the FAQ).

Removed problematic FAQs (per discussion). This required renumbering.

Updated references of chkentry to chksubmit (only a few references to
chkentry remain now - advising contestants to not use it but simply
stating it is for the judges and it is what chksubmit uses).

Added note in guidelines about gotos becoming 'old' (as Landon told me
it is something Leo wanted in the next guidelines thanks to me). Just so
Landon does not forget my C sins. :-)

I have regenerated the html files but the guidelines.html and rules.html
files have not been link-checked as these files will be modified by the
judges a fair amount so there is no point yet. I believe I got
references to nuked FAQs out but it's possible some were missed.

The quick-start.md and next/submit.md (and their html files) were
updated as well to refer to chksubmit instead of chkentry.

It is quite possible some things were missed but this should help move
things closer to getting ready for IOCCC29 in December.

next/submit.html

@@ -495,7 +495,7 @@ of:</p>
 timestamp</a>.</p>
 <p>We highly recommend that you use <code>mkiocccentry(1)</code> to create your submit file as
 it must pass the <code>txzchk(1)</code> sanity checks, and when the uncompressed tarball is
-untarred, the resulting directory must pass <code>chkentry(1)</code>.</p>
+untarred, the resulting directory must pass <code>chksubmit(1)</code>.</p>
 </blockquote>
 <p><strong>NOTE</strong>: the <code>00000000-0000-4000-0000-000000000000</code> is your UUID. <strong>MAKE SURE
 YOU CHANGE IT TO YOUR UUID</strong>!</p>
@@ -571,7 +571,7 @@ To see any status updates, you should logout and log back in later.</p>
 </blockquote>
 <p>Or:</p>
 <blockquote>
-<p><strong>Status: submit file failed the chkentry test! Use mkiocccentry to rebuild and resubmit to this slot.</strong></p>
+<p><strong>Status: submit file failed the chksubmit test! Use mkiocccentry to rebuild and resubmit to this slot.</strong></p>
 </blockquote>
 <p>… or <strong>ANY</strong> other error then you <strong>MUST FIX</strong> your submission, repackage your
 tarball with <code>mkiocccentry</code> and upload to the same slot again! If you do not fix
@@ -579,7 +579,7 @@ this your submission <strong>WILL BE REJECTED</strong> for violating <a href="ru
 17</a>!</p>
 <p>If the format test went well, then you will see:</p>
 <blockquote>
-<p><strong>Status: submit file received by the IOCCC judges. Passed both txzchk and chkentry tests.</strong></p>
+<p><strong>Status: submit file received by the IOCCC judges. Passed both txzchk and chksubmit tests.</strong></p>
 </blockquote>
 <p><strong>IMPORTANT</strong>: this does <strong>NOT</strong> mean that your submission does not violate the
 rules or that everything is OK once the tarball is extracted; it simply means
@@ -589,8 +589,8 @@ submission rejected for violating <a href="rules.html#rule17">Rule 17</a>, even
 tests passed.</p>
 <p>For details on <code>txzchk</code>, see the
 FAQ on “<a href="../faq.html#txzchk">txzchk</a>”.</p>
-<p>For details on <code>chkentry</code>, see the
-FAQ on “<a href="../faq.html#chkentry">chkentry</a>”.</p>
+<p>For details on <code>chksubmit</code>, see the
+FAQ on “<a href="../faq.html#chksubmit">chksubmit</a>”.</p>
 <p>If you need more information on the two JSON files, see
 FAQ on the <a href="../faq.html#info_json">“.info.json file</a>”
 and the