Add tests for RUNE-UPCASE.
Add tests for RUNE-UPCASE.

attila-lendvai/iolib,shamazmazum/iolib,lispnik/iolib,dkochmanski/iolib,shamazmazum/iolib,vsedach/iolib-simple-mux,dkochmanski/iolib,tiago4orion/iolib,attila-lendvai/iolib,vsedach/iolib-simple-mux,dkochmanski/iolib,deadtrickster/iolib,tiago4orion/iolib,deadtrickster/iolib,sionescu/iolib,lispnik/iolib,tiago4orion/iolib,shamazmazum/iolib,attila-lendvai/iolib,sionescu/iolib,deadtrickster/iolib,sionescu/iolib,lispnik/iolib