common/win32_fullscreen: Added automatic "Detach" from libvlc_media_player_t on new "Attach"
common/win32_fullscreen: Added automatic "Detach" from libvlc_media_player_t on new "Attach"

Signed-off-by: Jean-Baptiste Kempf <7b85a41a628204b76aba4326273a3ccc74bd009a@videolan.org>

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