PCRE2 support?

[PGNet Dev]

> Well, this depends on your point of view.  If a project which
> actually developed the library fails to introduce support to the
> new version of the library - for an external observer this
> suggests that there is something wrong with the new version.

FUD 'suggestions' simply aren't needed.

The Exim project didn't develop the pcre2 library ... Philip Hazel did 
(https://www.pcre.org/current/doc/html/pcre2.html#SEC4), as a separate 
project.

Exim's last (? something newer out there?) rationale for not adopting it 
was simply,

https://bugs.exim.org/show_bug.cgi?id=1878

"The original PCRE support is not broken.

If it is going to go away, then adding PCRE2 support becomes much more
important, but I've seen nobody saying that yet."


Also of note,

https://pcre.org/pcre.txt

"The old libraries (now called PCRE1) are still being maintained for bug 
fixes,  but  there  will  be  no  new  development.  New projects are 
advised to use the new PCRE2 libraries."