simple script to merge faq files in a single html (was Re: Web documentation available offline by default?)

Please find attached a preliminary rough shell script that does the
job for the faq[0-9]+.html files, keeping track of anchors
appropriately. It is missing pf, ports, and other files, but it's a
starting point.

Disclaimer: this is unofficial stuff and I am not asking for this
script to be supported by OpenBSD or included in the release
workflow. I will probably put the script in my git repo, just in case
somebody wants to use it.

Comments are welcome.

HTH