webapps.mason.version.files: add SLOT: forward declaration
webapps.mason.version.files: add SLOT: forward declaration

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