Make alien.enums create singletons so I can dispatch on them.  Clean up the code a bit.
Make alien.enums create singletons so I can dispatch on them.  Clean up the code a bit.

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