Update S02-names-vars/perl.t to this decade
Update S02-names-vars/perl.t to this decade

We don't have references anymore in Perl 6. Test captures instead of
non-existing scalar refs. Fixes the deprecation warnings.

b2gills/roast,bitrauser/roast,cygx/roast,bitrauser/roast,cygx/roast,zostay/roast,b2gills/roast,dogbert17/roast,zostay/roast,dogbert17/roast,zostay/roast,dankogai/roast,dankogai/roast,cygx/roast,skids/roast,dankogai/roast,skids/roast,skids/roast,perl6/roast,b2gills/roast