Re: A matching distroprefs appears to corrupt future calls to install()

Localizing $CPAN::Distrostatus::something_has_failed_at seems to
decouple calls to install() when I don't want them to know about each 
other, and halt_on_failure still works as far as I can tell:

   DISTRO: foreach my $distro ( @distros ) {
      local $CPAN::Distrostatus::something_has_failed_at;
      say "Processing $distro...";
   
      my $module = CPAN::Shell->expand( 'Module', $distro )
         or die "CPAN.pm doesn't know about $distro!\n";
   
      say "Installing $distro";
      CPAN::Shell->install( $distro );
      say "Finished processing $distro\n";
      }

I don't particularly like that as a permanent solution, but it's a fine
one until the holidays are over.

I think there's room for improvement in Distrostatus, but I'll think
about that later and maybe finish my half a patch.