Added ceylon.language.IdentifiableObject skeleton to keep the tests happy
Added ceylon.language.IdentifiableObject skeleton to keep the tests happy

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