port version reports 2.4.2 when built from tag v2.4.3

[Enrico Maria Crisostomo]

Ok, now I'm sufficiently curious as to dig deeper and replicate what I think the sequence of events were.

> On 11 Apr 2018, at 15:32, Joshua Root <jmr at macports.org> wrote:
> 
> On 2018-4-11 23:27 , Enrico Maria Crisostomo wrote:
>> Thanks Rainer,
>> 
>> I can't check it but as I said in my previous mail I think I had forgotten to run `make distclean` when I previously built `v2.4.2`.  And now I see that the `macports_autoconf.tcl` file you cite is an Autoconf config file.  Why this happen now makes sense.
> 
> As Rainer said, running configure is supposed to update that file (and
> in my experience it does).
> 
> - Josh