common/win32_fullscreen: added support of multimonitor configurations
common/win32_fullscreen: added support of multimonitor configurations

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