tools.hexdump: fix tests for slightly changed output.
tools.hexdump: fix tests for slightly changed output.

bpollack/factor,AlexIljin/factor,tgunr/factor,AlexIljin/factor,AlexIljin/factor,bpollack/factor,tgunr/factor,tgunr/factor,AlexIljin/factor,AlexIljin/factor,tgunr/factor,bpollack/factor,bpollack/factor,factor/factor,factor/factor,bpollack/factor,factor/factor,factor/factor,mrjbq7/factor,mrjbq7/factor,mrjbq7/factor,mrjbq7/factor,bpollack/factor,AlexIljin/factor,mrjbq7/factor,tgunr/factor,mrjbq7/factor,tgunr/factor,bpollack/factor,factor/factor,factor/factor,AlexIljin/factor