bloom-filters: fix tests on 64-bit machines
bloom-filters: fix tests on 64-bit machines

Lose the test that might actually create a very large bit-array and use
a number of elements that will be big enough, whatever the platform.
Now tested on a 64-bit machine.

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