add missing USING: to alien.c-types test
add missing USING: to alien.c-types test

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