Support unicode literal requirement strings in python <3.
Support unicode literal requirement strings in python <3.

ericzundel/commons,WCCCEDU/twitter-commons,VaybhavSharma/commons,jsirois/commons,Yasumoto/commons,pombredanne/commons,jsirois/commons,WCCCEDU/twitter-commons,atollena/commons,atollena/commons,cevaris/commons,brutkin/commons,atollena/commons,WCCCEDU/twitter-commons,cevaris/commons,abel-von/commons,cevaris/commons,atollena/commons,brutkin/commons,jsirois/commons,WCCCEDU/twitter-commons,pombredanne/commons,nkhuyu/commons,VaybhavSharma/commons,abel-von/commons,jsirois/commons,WCCCEDU/twitter-commons,ericzundel/commons,brutkin/commons,Yasumoto/commons,nkhuyu/commons,cevaris/commons,abel-von/commons,VaybhavSharma/commons,pombredanne/commons,Yasumoto/commons,brutkin/commons,pombredanne/commons,ericzundel/commons,abel-von/commons,nkhuyu/commons,abel-von/commons,VaybhavSharma/commons,Yasumoto/commons,ericzundel/commons,jsirois/commons,atollena/commons,VaybhavSharma/commons,cevaris/commons,Yasumoto/commons,pombredanne/commons,nkhuyu/commons,nkhuyu/commons,brutkin/commons,ericzundel/commons