log4shib and pkg-config

[Cantor, Scott]

> Sure, I'll do so.  No need to hurry this, I just wanted to know your
> attitude towards the matter before investing considerable work into it.
> Knowing you're willing to follow I'll just go ahead and gather some
> experience for the next release cycle.

I really don't have the time anymore to track autoconf developments, so if there are things we need to do to modernize, I'm fine with it.

> I pondered something like renaming xmltooling/logging.h to logging.h.in
> and moving all necessary include statements there like
> #include <@log4lib@/OstreamAppender.h> etc.  Maybe not worth the
> effort, though.

Oh, I see. Eh, you forget I have Windows to deal with, so every .in file ends up creating something I have to handle with a _win32 variant. Not worth it.

-- Scott