[Perl/perl5] dadb7c: Add PerlIO_{read,sym}link backcompat defines to Cw...

[Leon Timmermans via perl5-changes]

  Branch: refs/heads/leont/pathtool-backcompat
  Home:   https://github.com/Perl/perl5
  Commit: dadb7c31db1235881c4d966c83a02264ef667ef6
      
https://github.com/Perl/perl5/commit/dadb7c31db1235881c4d966c83a02264ef667ef6
  Author: Leon Timmermans <faw...@gmail.com>
  Date:   2022-01-07 (Fri, 07 Jan 2022)

  Changed paths:
    M dist/PathTools/Cwd.pm
    M dist/PathTools/Cwd.xs
    M dist/PathTools/lib/File/Spec.pm
    M dist/PathTools/lib/File/Spec/AmigaOS.pm
    M dist/PathTools/lib/File/Spec/Cygwin.pm
    M dist/PathTools/lib/File/Spec/Epoc.pm
    M dist/PathTools/lib/File/Spec/Functions.pm
    M dist/PathTools/lib/File/Spec/Mac.pm
    M dist/PathTools/lib/File/Spec/OS2.pm
    M dist/PathTools/lib/File/Spec/Unix.pm
    M dist/PathTools/lib/File/Spec/VMS.pm
    M dist/PathTools/lib/File/Spec/Win32.pm

  Log Message:
  -----------
  Add PerlIO_{read,sym}link backcompat defines to Cws.xs