use parrot strings when iterating environment
use parrot strings when iterating environment

handles non-ascii environment variable names better

gitster/parrot,youprofit/parrot,youprofit/parrot,tewk/parrot-select,FROGGS/parrot,tewk/parrot-select,gitster/parrot,youprofit/parrot,parrot/parrot,tewk/parrot-select,gitster/parrot,youprofit/parrot,gagern/parrot,gagern/parrot,FROGGS/parrot,tkob/parrot,parrot/parrot,gagern/parrot,tkob/parrot,parrot/parrot,tewk/parrot-select,FROGGS/parrot,youprofit/parrot,youprofit/parrot,FROGGS/parrot,FROGGS/parrot,gagern/parrot,tkob/parrot,FROGGS/parrot,tewk/parrot-select,gagern/parrot,tkob/parrot,tkob/parrot,tewk/parrot-select,parrot/parrot,gagern/parrot,gitster/parrot,gagern/parrot,parrot/parrot,youprofit/parrot,gitster/parrot,youprofit/parrot,tewk/parrot-select,FROGGS/parrot,tkob/parrot,tkob/parrot,tkob/parrot,gitster/parrot,gitster/parrot,FROGGS/parrot