gdbm.ffi: Use alien library finder except on Windows until we can test if it works there.
gdbm.ffi: Use alien library finder except on Windows until we can test if it works there.

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