[Perl/perl5] 3b6c1c: Use ppport.h when building dist/ modules in core

[Leon Timmermans via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 3b6c1c937e8a68fba0239b18e2f5f8b91b9c3294
      
https://github.com/Perl/perl5/commit/3b6c1c937e8a68fba0239b18e2f5f8b91b9c3294
  Author: Leon Timmermans <faw...@gmail.com>
  Date:   2023-02-22 (Wed, 22 Feb 2023)

  Changed paths:
    M MANIFEST
    M Porting/Maintainers.pl
    M dist/Data-Dumper/Dumper.pm
    M dist/Data-Dumper/Dumper.xs
    M dist/Data-Dumper/Makefile.PL
    M dist/PathTools/Cwd.pm
    M dist/PathTools/Cwd.xs
    M dist/PathTools/Makefile.PL
    M dist/Storable/Makefile.PL
    M dist/Storable/Storable.pm
    M dist/Storable/Storable.xs
    M dist/Time-HiRes/HiRes.pm
    M dist/Time-HiRes/HiRes.xs
    M dist/Time-HiRes/Makefile.PL
    M dist/threads-shared/lib/threads/shared.pm
    M dist/threads-shared/shared.xs
    A dist/threads/threads.h
    M dist/threads/threads.xs

  Log Message:
  -----------
  Use ppport.h when building dist/ modules in core

By always including `ppport.h`, this simplifies both XS code and tooling around 
it.