libclass-xsaccessor-perl: defining PERL_CORE for external XS modules and ABI stability

[Ansgar Burchardt]

Hi,

Niko Tyni <ntyni at debian.org> writes:

> This means the safest way would be for those packages defining PERL_CORE
> to explicitly depend on the current upstream version of Perl and require
> binNMU rebuilds whenever that changes. This isn't particularly hard to do
> [1], and would be even easier with #579112 resolved.

I implemented this for libclass-xsaccessor-perl.  It might mean a few
additional binNMUs, but I think that is better than the package
breaking.  Thanks for your suggestion.

Regards,
Ansgar