Re: [PATCH 0/6] Doc: drop support for docbook-xsl before 1.74

> In the documentation Makefile and a few helper conf and xsl files, we
> carry various workarounds to make the docs build at all or to look
> better with older docbook-xsl versions. Let's see if we can't just drop
> that support. All of this seems to have been useful at one point, but I
> doubt that anyone needs this nowadays. This was also suggested in [1].
> 
> The final commit in this series bumps the minimum required version of
> docbook-xsl to 1.74.0, which is from June 2008. The whole series should
> be a no-op unless you're on an older release than that. That said, I've
> only tested this with the version that comes with my OS, 1.79.1.
> 
> After this series, user-manual.conf still refers to older docbook-xsl
> versions. The proper fix there might be to actually be a bit more
> aggressive and drop that hunk, making the rendered docs prettier.
> There's some history there, including mentions of texinfo, which is
> outside my comfort zone. I've got work in progress there, but I'd rather
> submit that separately from these "expected no-op" patches.