io.launcher.unix: simplify use of temp-directory.
io.launcher.unix: simplify use of temp-directory.

nicolas-p/factor,bpollack/factor,mrjbq7/factor,bjourne/factor,tgunr/factor,AlexIljin/factor,mrjbq7/factor,AlexIljin/factor,tgunr/factor,AlexIljin/factor,bjourne/factor,bjourne/factor,bjourne/factor,tgunr/factor,nicolas-p/factor,tgunr/factor,bpollack/factor,factor/factor,nicolas-p/factor,bpollack/factor,nicolas-p/factor,nicolas-p/factor,mrjbq7/factor,tgunr/factor,mrjbq7/factor,AlexIljin/factor,tgunr/factor,factor/factor,factor/factor,mrjbq7/factor,bjourne/factor,factor/factor,bpollack/factor,AlexIljin/factor,bjourne/factor,AlexIljin/factor,factor/factor,mrjbq7/factor,bpollack/factor,bpollack/factor,bjourne/factor,bpollack/factor,nicolas-p/factor,AlexIljin/factor,nicolas-p/factor,factor/factor