Move the "mirrors-cvsup" ID attribute to the correct element. Some
internal links now work properly. Pointed out by a cast of thousands.

Move the anonymous CVS stuff out of the cutting-edge chapter and into the
mirrors appendix. As with the other commits in this series, this was a
straight cut-n-paste from one file to another, *and* then updating the
<sect?> elements to promote everything up a level.