npapi win32: allow switch off fullscreen mode by doubleclicking on drawable.
npapi win32: allow switch off fullscreen mode by doubleclicking on drawable.

When fullscreen window is on another display.

jamesbates/npapi-vlc,chengsun/gtk-npapi-vlc,chengsun/gtk-npapi-vlc,jamesbates/npapi-vlc,chengsun/gtk-npapi-vlc,jamesbates/npapi-vlc