[ITA] popt-1.18-1

[Lemures Lemniscati <lemures.lemniscati@gmail.com>]

Hi!

ITA for popt, which has been maintained by Yaakov [1].

Now, the latest upstream of popt is 1.8 [2].

A new candidate cygport file is placed at [3].
And, it's been tested on Cygwin AppVeyor CI (ID 1560: [4]).

Generated package files are placed at [5] and [6]:

[1]: https://cygwin.com/git/?p=git/cygwin-packages/popt.git
[2]: https://github.com/rpm-software-management/popt
[3]: https://github.com/cygwin-lem/popt-cygport/tree/n_1.18-1
[4]: https://cygwin.com/cgi-bin2/jobs.cgi?id=1560
  or https://ci.appveyor.com/project/cygwin/scallywag/builds/37059271
[5]: https://cygwin-lem.github.io/popt-cygport/
[6]: https://github.com/cygwin-lem/popt-cygport/tree/n_1.18-1_gh-pages


# An ignorable warning brought by autoreconf-2.69:

```
autoreconf-2.69: configure.ac: tracing
Use of uninitialized value $args[0] in split at /usr/bin/autoreconf-2.69 line 493, <GEN2> line 8.
```

It will disappear when using autoconf v2.69d or later,
fixed at the commit
https://git.savannah.gnu.org/cgit/autoconf.git/commit/?id=b0d20c049bda80a9d323326ae5ea3fd5e4857712

# 1.18-testit.patch:

In the upstream CI, the original `testit.sh` will pass the tests.
But, on cygwin `src_test()` will get some failures without this patch.

The diffrences are program names printed in usage,
and so they are not critical and would be acceptable.



Regards, 

Lem