The instructions were written before gl-admin-push was created, I guess,
making things sound a lot more complicated than they should be.
Thanks to Nick (see gitolite mailing list messages, subject line
"replicating a gitolite installation") for helping me realise this
needed fixing.
I got tired of being told "TL;DR". Now the online versions of most
documents fit on a page or two, or at least most of them do. The rest
has been split out (and you can see the links to the split out sections
right where the text is in the raw Markdown).
This is much more pleasant to read, and I've improved the linking so
it's much less effort for me to keep the links correct.