Some optimizations in CSTRING code.
Some optimizations in CSTRING code.

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