file-picker.windows: mock up some code for windows.
file-picker.windows: mock up some code for windows.

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