Revert "tools.gc-decode: Dumb fix for zip change."
Revert "tools.gc-decode: Dumb fix for zip change."

This reverts commit 4c1f7451a4012e8ad036f160ac614a43c8de8732.

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