[euler/prob003] add more 6ish version that works with current Rakudo
[euler/prob003] add more 6ish version that works with current Rakudo

stmuk/perl6-examples,shlomif/perl6-examples,shlomif/perl6-examples,Quinny/perl6-examples,shlomif/perl6-examples,perl6/perl6-examples,Quinny/perl6-examples,perl6/perl6-examples,perl6/perl6-examples,shlomif/perl6-examples,shlomif/perl6-examples,Quinny/perl6-examples,Quinny/perl6-examples,perl6/perl6-examples,stmuk/perl6-examples,stmuk/perl6-examples,stmuk/perl6-examples,agentzh/perl6-examples,agentzh/perl6-examples,agentzh/perl6-examples,stmuk/perl6-examples,perl6/perl6-examples,Quinny/perl6-examples