checksums.md5: make the new optimized code work with big endian CPUs
checksums.md5: make the new optimized code work with big endian CPUs

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