io.streams.byte-array: add test of empty byte array.
io.streams.byte-array: add test of empty byte array.

nicolas-p/factor,sarvex/factor-lang,bpollack/factor,mrjbq7/factor,bjourne/factor,bjourne/factor,factor/factor,sarvex/factor-lang,tgunr/factor,dch/factor,slavapestov/factor,bpollack/factor,mrjbq7/factor,AlexIljin/factor,AlexIljin/factor,tgunr/factor,sarvex/factor-lang,bjourne/factor,factor/factor,bjourne/factor,AlexIljin/factor,slavapestov/factor,slavapestov/factor,sarvex/factor-lang,bjourne/factor,dch/factor,factor/factor,bpollack/factor,slavapestov/factor,AlexIljin/factor,bjourne/factor,mrjbq7/factor,factor/factor,dch/factor,factor/factor,bpollack/factor,tgunr/factor,nicolas-p/factor,factor/factor,slavapestov/factor,AlexIljin/factor,dch/factor,nicolas-p/factor,tgunr/factor,AlexIljin/factor,sarvex/factor-lang,bpollack/factor,sarvex/factor-lang,dch/factor,nicolas-p/factor,AlexIljin/factor,mrjbq7/factor,tgunr/factor,nicolas-p/factor,tgunr/factor,slavapestov/factor,slavapestov/factor,bpollack/factor,nicolas-p/factor,mrjbq7/factor,sarvex/factor-lang,bjourne/factor,bpollack/factor,nicolas-p/factor,mrjbq7/factor,dch/factor