some fixes to unflatten for ceylon/ceylon-js#250
some fixes to unflatten for ceylon/ceylon-js#250

ceylon/ceylon.language,ceylon/ceylon.language,lucaswerkmeister/ceylon.language,unratito/ceylon.language,jvasileff/ceylon.language,unratito/ceylon.language,lucaswerkmeister/ceylon.language,jvasileff/ceylon.language