perl5.x.x = untreaded, tperl5.x.x = threaded

==  perl5.18.0    NOK, READONLY, pNOK
== tperl5.18.0    NOK, PADTMP, READONLY, pNOK

==  perl5.20.0    NOK, READONLY, pNOK
== tperl5.20.0    NOK, READONLY, pNOK