rra-c-util 10.3

This is a minor feature and bug fix release of my collection of utilities and tests intended for copying into other packages I maintain.

The new feature is an additional Perl test using Test::Kwalitee to check a few more things about the Perl packaging, and a MANIFEST.SKIP file that is suitable for copying as-is into most Perl packages.

On the bug fix side, the portable/getnameinfo test now skips some tests rather than failing on systems that are strange enough that someone has put 0.0.0.0 into DNS, and some small fixes for M4 macros. All the bug fixes are thanks to Julien ÉLIE.

You can get the latest release from the rra-c-util distribution page.