[Perl/perl5] fff3b0: Get Test2 tests working on VMS

[Craig A. Berry]

  Branch: refs/heads/craigb/test2_on_vms
  Home:   https://github.com/Perl/perl5
  Commit: fff3b09d5f999c4d520d2b31ed9f39f5d1082dd2
      
https://github.com/Perl/perl5/commit/fff3b09d5f999c4d520d2b31ed9f39f5d1082dd2
  Author: Craig A. Berry <craigbe...@mac.com>
  Date:   2023-10-06 (Fri, 06 Oct 2023)

  Changed paths:
    M Porting/Maintainers.pl
    M cpan/Test2-Suite/t/modules/Plugin/SRand.t
    M cpan/Test2-Suite/t/modules/Require/AuthorTesting.t
    M cpan/Test2-Suite/t/modules/Require/EnvVar.t
    M cpan/Test2-Suite/t/modules/Tools/GenTemp.t
    M t/porting/customized.dat

  Log Message:
  -----------
  Get Test2 tests working on VMS

List assignment to %ENV is not supported, and mongrel filenames
produced by concatenating hard-coded slashes with the return
values from File::Spec functions don't work.