Many of the items are fixed in rev66217; thanks!  A few of them were
fixed in the revisions I did this past weekend.

Not fixed: 

* the links for apply() and map() in the PEP 371 section.  Georg, is
there a way to override where the methods link to, or at least prevent
them from being turned into links?

* the itertools section uses the -> to indicate the resulting stream of
values; this is why those examples aren't written in the
interpreter-prompt style.  So I'm not going to change the examples by
adding list().